Drop-coating produces efficient CsPbI<sub>2</sub>Br solar cells

Hanrui Xiao; Chuantian Zuo; Fangyang Liu; Liming Ding

doi:10.1088/1674-4926/42/5/050502

J. Semicond. > 2021, Volume 42 > Issue 5 > 050502

SHORT COMMUNICATION

Drop-coating produces efficient CsPbI₂Br solar cells

Hanrui Xiao^{1, 2}, Chuantian Zuo^2,, Fangyang Liu^1, and Liming Ding^2,

+ Author Affiliations

1. School of Metallurgy and Environment, Central South University, Changsha 410083, China
2. Center for Excellence in Nanoscience (CAS), Key Laboratory of Nanosystem and Hierarchical Fabrication (CAS), National Center for Nanoscience and Technology, Beijing 100190, China

Author Bio:

Hanrui Xiao got his BS degree from Hunan University of Technology in 2016. Now he is a PhD student at Central South University under the supervision of Professor Fangyang Liu. Since March 2019, he has been working in Liming Ding Group at National Center for Nanoscience and Technology as a visiting student. His work focuses on perovskite solar cells.

Chuantian Zuo received his PhD degree in 2018 from National Center for Nanoscience and Technology under the supervision of Professor Liming Ding. Then he did postdoctoral research in CSIRO, Australia. Currently, he is an assistant professor in Liming Ding Group. His research focuses on innovative materials and devices.

Fangyang Liu received his BS in 2006 and PhD in 2011 from Central South University, later he worked as a lecturer and associate professor there. In 2013, he joined Martin Green Group at University of New South Wales, Australia as a postdoc. In 2017, he moved back to Central South University as a full professor. His research focuses on inorganic solar cells and lithium ion battery.

Liming Ding got his PhD from University of Science and Technology of China (was a joint student at Changchun Institute of Applied Chemistry, CAS). He started his research on OSCs and PLEDs in Olle Inganäs Lab in 1998. Later on, he worked at National Center for Polymer Research, Wright-Patterson Air Force Base and Argonne National Lab (USA). He joined Konarka as a Senior Scientist in 2008. In 2010, he joined National Center for Nanoscience and Technology as a full professor. His research focuses on functional materials and devices. He is RSC Fellow, the nominator for Xplorer Prize, and the Associate Editors for Science Bulletin and Journal of Semiconductors.

Corresponding author: Chuantian Zuo, zuocht@nanoctr.cn; Fangyang Liu, liufangyang@csu.edu.cn; Liming Ding, ding@nanoctr.cn

DOI: 10.1088/1674-4926/42/5/050502

References

[1]	Sutton R J, Eperon G E, Miranda L, et al. Bandgap-tunable cesium lead halide perovskites with high thermal stability for efficient solar cells. Adv Energy Mater, 2016, 6, 1502458 doi: 10.1002/aenm.201502458
[2]	Eperon G E, Stranks S D, Menelaou C, et al. Formamidinium lead trihalide: A broadly tunable perovskite for efficient planar heterojunction solar cells. Energy Environ Sci, 2014, 7, 982 doi: 10.1039/c3ee43822h
[3]	Wang Y, Dar M I, Ono L K, et al. Thermodynamically stabilized β-CsPbI₃-based perovskite solar cells with efficiencies > 18%. Science, 2019, 365, 591 doi: 10.1126/science.aav8680
[4]	Zhang J, Hodes G, Jin Z, et al. All-inorganic CsPbX₃ perovskite solar cells: Progress and prospects. Angew Chem Int Ed, 2019, 58, 15596 doi: 10.1002/anie.201901081
[5]	Yoon S M, Min H, Kim J B, et al. Surface engineering of ambient-air-processed cesium lead triiodide layers for efficient solar cells. Joule, 2021, 5, 183 doi: 10.1016/j.joule.2020.11.020
[6]	Sutton R J, Filip M R, Haghighirad A A, et al. Cubic or orthorhombic? Revealing the crystal structure of metastable black-phase CsPbI₃ by theory and experiment. ACS Energy Lett, 2018, 3, 1787 doi: 10.1021/acsenergylett.8b00672
[7]	Yao H, Zhao J, Li Z, et al. Research and progress of black metastable phase CsPbI₃ solar cells. Mater Chem Front, 2021, 5, 1221 doi: 10.1039/D0QM00756K
[8]	Li Z, Yang M, Park J S, et al. Stabilizing perovskite structures by tuning tolerance factor: Formation of formamidinium and cesium lead iodide solid-state alloys. Chem Mater, 2016, 28, 284 doi: 10.1021/acs.chemmater.5b04107
[9]	Fang Z, Meng X, Zuo C, et al. Interface engineering gifts CsPbI_2.25Br_0.75 solar cells high performance. Sci Bull, 2019, 64, 1743 doi: 10.1016/j.scib.2019.09.023
[10]	Ho-Baillie A, Zhang M, Lau C F J, et al. Untapped potentials of inorganic metal halide perovskite solar cells. Joule, 2019, 3, 938 doi: 10.1016/j.joule.2019.02.002
[11]	Fang Z, Liu L, Zhang Z, et al. CsPbI_2.25Br_0.75 solar cells with 15.9% efficiency. Sci Bull, 2019, 64, 507 doi: 10.1016/j.scib.2019.04.013
[12]	Jia X, Zuo C, Tao S, et al. CsPb(I_xBr₁₋_x)₃ solar cells. Sci Bull, 2019, 64, 1532 doi: 10.1016/j.scib.2019.08.017
[13]	Liu L, Xiao Z, Zuo C, et al. Inorganic perovskite/organic tandem solar cells with efficiency over 20%. J Semicond, 2021, 42, 020501 doi: 10.1088/1674-4926/42/2/020501
[14]	Zhang Z, Li J, Fang Z, et al. Adjusting energy level alignment between HTL and CsPbI₂Br to improve solar cell efficiency. J Semicond, 2021, 42, 030501 doi: 10.1088/1674-4926/42/2/030501
[15]	Wang P, Wang H, Mao Y, et al. Organic ligands armored ZnO enhances efficiency and stability of CsPbI₂Br perovskite solar cells. Adv Sci, 2020, 7, 2000421 doi: 10.1002/advs.202000421
[16]	Patil J V, Mali S S, Hong C K. A-site rubidium cation-incorporated CsPbI₂Br all-inorganic perovskite solar cells exceeding 17% efficiency. Sol RRL, 2020, 4, 2000164 doi: 10.1002/solr.202000164
[17]	Chen W, Chen H, Xu G, et al. Precise control of crystal growth for highly efficient CsPbI₂Br perovskite solar cells. Joule, 2019, 3, 191 doi: 10.1016/j.joule.2018.10.011
[18]	Lin Z Q, Qiao H W, Zhou Z R, et al. Water assisted formation of highly oriented CsPbI₂Br perovskite films with the solar cell efficiency exceeding 16%. J Mater Chem A, 2020, 8, 17670 doi: 10.1039/D0TA05118G
[19]	Wang A, Deng X, Wang J, et al. Ionic liquid reducing energy loss and stabilizing CsPbI₂Br solar cells. Nano Energy, 2021, 81, 105631 doi: 10.1016/j.nanoen.2020.105631
[20]	Han Y, Zhao H, Duan C, et al. Controlled n-doping in air-stable CsPbI₂Br perovskite solar cells with a record efficiency of 16.79%. Adv Funct Mater, 2020, 30, 1909972 doi: 10.1002/adfm.201909972
[21]	Shang Y, Fang Z, Hu W, et al. Efficient and photostable CsPbI₂Br solar cells realized by adding PMMA. J Semicond, 2021, 42, 050501 doi: 10.1088/1674-4926/42/2/050501
[22]	Mali S S, Patil J V, Shinde P S, et al. Fully air-processed dynamic hot-air-assisted M:CsPbI₂Br (M: Eu²⁺, In³⁺) for stable inorganic perovskite solar cells. Matter, 2021, 4, 635 doi: 10.1016/j.matt.2020.11.008
[23]	He J, Liu J, Hou Y, et al. Surface chelation of cesium halide perovskite by dithiocarbamate for efficient and stable solar cells. Nat Commun, 2020, 11, 4237 doi: 10.1038/s41467-020-18015-5
[24]	Fan Y, Fang J, Chang X, et al. Scalable ambient fabrication of high-performance CsPbI₂Br solar cells. Joule, 2019, 3, 2485 doi: 10.1016/j.joule.2019.07.015
[25]	Zuo C, Scully A D, Tan W L, et al. Crystallisation control of drop-cast quasi-2D/3D perovskite layers for efficient solar cells. Commun Mater, 2020, 1, 33 doi: 10.1038/s43246-020-0036-z
[26]	Zuo C, Scully A D, Vak D, et al. Self-assembled 2D perovskite layers for efficient printable solar cells. Adv Energy Mater, 2019, 9, 1803258 doi: 10.1002/aenm.201803258
[27]	Zuo C, Ding L. Drop-casting enables making efficient perovskite solar cells under high humidity. Angew Chem Int Ed, 2021 doi: 10.1002/anie.202101868
[28]	Xu G, Xue R, Chen W, et al. New strategy for two-step sequential deposition: Incorporation of hydrophilic fullerene in second precursor for high-performance p-i-n planar perovskite solar cells. Adv Energy Mater, 2018, 8, 1703054 doi: 10.1002/aenm.201703054
[29]	Bi D, Yi C, Luo J, et al. Polymer-templated nucleation and crystal growth of perovskite films for solar cells with efficiency greater than 21%. Nat Energy, 2016, 1, 16142 doi: 10.1038/nenergy.2016.142
[30]	Tian J, Wang J, Xue Q, et al. Composition engineering of all-inorganic perovskite film for efficient and operationally stable solar cells. Adv Funct Mater, 2020, 30, 2001764 doi: 10.1002/adfm.202001764
[31]	Li G, Ching K L, Ho J Y L, et al. Identifying the optimum morphology in high-performance perovskite solar cells. Adv Energy Mater, 2015, 5, 1401775 doi: 10.1002/aenm.201401775
[32]	Eperon G E, Burlakov V M, Docampo P, et al. Morphological control for high performance, solution-processed planar heterojunction perovskite solar cells. Adv Funct Mater, 2014, 24, 151 doi: 10.1002/adfm.201302090

Fig. 1. (Color online) (a) Illustration for the drop-coating process. (b) XRD patterns for CsPbI₂Br films made without or with IPA. (c) SEM image for the film made without IPA. (d) SEM image for the film made with IPA. (e) Dark I–V curves for the electron-only devices made without or with IPA. (f) J–V curves for the best cells made without or with IPA.

DownLoad: Full-Size Img PowerPoint

[1]	Sutton R J, Eperon G E, Miranda L, et al. Bandgap-tunable cesium lead halide perovskites with high thermal stability for efficient solar cells. Adv Energy Mater, 2016, 6, 1502458 doi: 10.1002/aenm.201502458
[2]	Eperon G E, Stranks S D, Menelaou C, et al. Formamidinium lead trihalide: A broadly tunable perovskite for efficient planar heterojunction solar cells. Energy Environ Sci, 2014, 7, 982 doi: 10.1039/c3ee43822h
[3]	Wang Y, Dar M I, Ono L K, et al. Thermodynamically stabilized β-CsPbI₃-based perovskite solar cells with efficiencies > 18%. Science, 2019, 365, 591 doi: 10.1126/science.aav8680
[4]	Zhang J, Hodes G, Jin Z, et al. All-inorganic CsPbX₃ perovskite solar cells: Progress and prospects. Angew Chem Int Ed, 2019, 58, 15596 doi: 10.1002/anie.201901081
[5]	Yoon S M, Min H, Kim J B, et al. Surface engineering of ambient-air-processed cesium lead triiodide layers for efficient solar cells. Joule, 2021, 5, 183 doi: 10.1016/j.joule.2020.11.020
[6]	Sutton R J, Filip M R, Haghighirad A A, et al. Cubic or orthorhombic? Revealing the crystal structure of metastable black-phase CsPbI₃ by theory and experiment. ACS Energy Lett, 2018, 3, 1787 doi: 10.1021/acsenergylett.8b00672
[7]	Yao H, Zhao J, Li Z, et al. Research and progress of black metastable phase CsPbI₃ solar cells. Mater Chem Front, 2021, 5, 1221 doi: 10.1039/D0QM00756K
[8]	Li Z, Yang M, Park J S, et al. Stabilizing perovskite structures by tuning tolerance factor: Formation of formamidinium and cesium lead iodide solid-state alloys. Chem Mater, 2016, 28, 284 doi: 10.1021/acs.chemmater.5b04107
[9]	Fang Z, Meng X, Zuo C, et al. Interface engineering gifts CsPbI_2.25Br_0.75 solar cells high performance. Sci Bull, 2019, 64, 1743 doi: 10.1016/j.scib.2019.09.023
[10]	Ho-Baillie A, Zhang M, Lau C F J, et al. Untapped potentials of inorganic metal halide perovskite solar cells. Joule, 2019, 3, 938 doi: 10.1016/j.joule.2019.02.002
[11]	Fang Z, Liu L, Zhang Z, et al. CsPbI_2.25Br_0.75 solar cells with 15.9% efficiency. Sci Bull, 2019, 64, 507 doi: 10.1016/j.scib.2019.04.013
[12]	Jia X, Zuo C, Tao S, et al. CsPb(I_xBr₁₋_x)₃ solar cells. Sci Bull, 2019, 64, 1532 doi: 10.1016/j.scib.2019.08.017
[13]	Liu L, Xiao Z, Zuo C, et al. Inorganic perovskite/organic tandem solar cells with efficiency over 20%. J Semicond, 2021, 42, 020501 doi: 10.1088/1674-4926/42/2/020501
[14]	Zhang Z, Li J, Fang Z, et al. Adjusting energy level alignment between HTL and CsPbI₂Br to improve solar cell efficiency. J Semicond, 2021, 42, 030501 doi: 10.1088/1674-4926/42/2/030501
[15]	Wang P, Wang H, Mao Y, et al. Organic ligands armored ZnO enhances efficiency and stability of CsPbI₂Br perovskite solar cells. Adv Sci, 2020, 7, 2000421 doi: 10.1002/advs.202000421
[16]	Patil J V, Mali S S, Hong C K. A-site rubidium cation-incorporated CsPbI₂Br all-inorganic perovskite solar cells exceeding 17% efficiency. Sol RRL, 2020, 4, 2000164 doi: 10.1002/solr.202000164
[17]	Chen W, Chen H, Xu G, et al. Precise control of crystal growth for highly efficient CsPbI₂Br perovskite solar cells. Joule, 2019, 3, 191 doi: 10.1016/j.joule.2018.10.011
[18]	Lin Z Q, Qiao H W, Zhou Z R, et al. Water assisted formation of highly oriented CsPbI₂Br perovskite films with the solar cell efficiency exceeding 16%. J Mater Chem A, 2020, 8, 17670 doi: 10.1039/D0TA05118G
[19]	Wang A, Deng X, Wang J, et al. Ionic liquid reducing energy loss and stabilizing CsPbI₂Br solar cells. Nano Energy, 2021, 81, 105631 doi: 10.1016/j.nanoen.2020.105631
[20]	Han Y, Zhao H, Duan C, et al. Controlled n-doping in air-stable CsPbI₂Br perovskite solar cells with a record efficiency of 16.79%. Adv Funct Mater, 2020, 30, 1909972 doi: 10.1002/adfm.201909972
[21]	Shang Y, Fang Z, Hu W, et al. Efficient and photostable CsPbI₂Br solar cells realized by adding PMMA. J Semicond, 2021, 42, 050501 doi: 10.1088/1674-4926/42/2/050501
[22]	Mali S S, Patil J V, Shinde P S, et al. Fully air-processed dynamic hot-air-assisted M:CsPbI₂Br (M: Eu²⁺, In³⁺) for stable inorganic perovskite solar cells. Matter, 2021, 4, 635 doi: 10.1016/j.matt.2020.11.008
[23]	He J, Liu J, Hou Y, et al. Surface chelation of cesium halide perovskite by dithiocarbamate for efficient and stable solar cells. Nat Commun, 2020, 11, 4237 doi: 10.1038/s41467-020-18015-5
[24]	Fan Y, Fang J, Chang X, et al. Scalable ambient fabrication of high-performance CsPbI₂Br solar cells. Joule, 2019, 3, 2485 doi: 10.1016/j.joule.2019.07.015
[25]	Zuo C, Scully A D, Tan W L, et al. Crystallisation control of drop-cast quasi-2D/3D perovskite layers for efficient solar cells. Commun Mater, 2020, 1, 33 doi: 10.1038/s43246-020-0036-z
[26]	Zuo C, Scully A D, Vak D, et al. Self-assembled 2D perovskite layers for efficient printable solar cells. Adv Energy Mater, 2019, 9, 1803258 doi: 10.1002/aenm.201803258
[27]	Zuo C, Ding L. Drop-casting enables making efficient perovskite solar cells under high humidity. Angew Chem Int Ed, 2021 doi: 10.1002/anie.202101868
[28]	Xu G, Xue R, Chen W, et al. New strategy for two-step sequential deposition: Incorporation of hydrophilic fullerene in second precursor for high-performance p-i-n planar perovskite solar cells. Adv Energy Mater, 2018, 8, 1703054 doi: 10.1002/aenm.201703054
[29]	Bi D, Yi C, Luo J, et al. Polymer-templated nucleation and crystal growth of perovskite films for solar cells with efficiency greater than 21%. Nat Energy, 2016, 1, 16142 doi: 10.1038/nenergy.2016.142
[30]	Tian J, Wang J, Xue Q, et al. Composition engineering of all-inorganic perovskite film for efficient and operationally stable solar cells. Adv Funct Mater, 2020, 30, 2001764 doi: 10.1002/adfm.202001764
[31]	Li G, Ching K L, Ho J Y L, et al. Identifying the optimum morphology in high-performance perovskite solar cells. Adv Energy Mater, 2015, 5, 1401775 doi: 10.1002/aenm.201401775
[32]	Eperon G E, Burlakov V M, Docampo P, et al. Morphological control for high performance, solution-processed planar heterojunction perovskite solar cells. Adv Funct Mater, 2014, 24, 151 doi: 10.1002/adfm.201302090

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Received: 13 March 2021 Revised: Online: Accepted Manuscript: 15 March 2021Uncorrected proof: 15 March 2021Published: 01 May 2021

Article Navigation > Journal of Semiconductors > 2021 > 42(5): 050502

Hanrui Xiao, Chuantian Zuo, Fangyang Liu, Liming Ding. Drop-coating produces efficient CsPbI2Br solar cells[J]. Journal of Semiconductors, 2021, 42(5): 050502. doi: 10.1088/1674-4926/42/5/050502 ****H R Xiao, C T Zuo, F Y Liu, L M Ding, Drop-coating produces efficient CsPbI2Br solar cells[J]. J. Semicond., 2021, 42(5): 050502. doi: 10.1088/1674-4926/42/5/050502.

Citation:

Hanrui Xiao, Chuantian Zuo, Fangyang Liu, Liming Ding. Drop-coating produces efficient CsPbI₂Br solar cells[J]. Journal of Semiconductors, 2021, 42(5): 050502. doi: 10.1088/1674-4926/42/5/050502 ****

H R Xiao, C T Zuo, F Y Liu, L M Ding, Drop-coating produces efficient CsPbI2Br solar cells[J]. J. Semicond., 2021, 42(5): 050502. doi: 10.1088/1674-4926/42/5/050502.

Citation:

H R Xiao, C T Zuo, F Y Liu, L M Ding, Drop-coating produces efficient CsPbI2Br solar cells[J]. J. Semicond., 2021, 42(5): 050502. doi: 10.1088/1674-4926/42/5/050502.

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Drop-coating produces efficient CsPbI₂Br solar cells

DOI: 10.1088/1674-4926/42/5/050502

1.
School of Metallurgy and Environment, Central South University, Changsha 410083, China
2.
Center for Excellence in Nanoscience (CAS), Key Laboratory of Nanosystem and Hierarchical Fabrication (CAS), National Center for Nanoscience and Technology, Beijing 100190, China

More Information

Hanrui Xiao：got his BS degree from Hunan University of Technology in 2016. Now he is a PhD student at Central South University under the supervision of Professor Fangyang Liu. Since March 2019, he has been working in Liming Ding Group at National Center for Nanoscience and Technology as a visiting student. His work focuses on perovskite solar cells
Chuantian Zuo：received his PhD degree in 2018 from National Center for Nanoscience and Technology under the supervision of Professor Liming Ding. Then he did postdoctoral research in CSIRO, Australia. Currently, he is an assistant professor in Liming Ding Group. His research focuses on innovative materials and devices
Fangyang Liu：received his BS in 2006 and PhD in 2011 from Central South University, later he worked as a lecturer and associate professor there. In 2013, he joined Martin Green Group at University of New South Wales, Australia as a postdoc. In 2017, he moved back to Central South University as a full professor. His research focuses on inorganic solar cells and lithium ion battery
Liming Ding：got his PhD from University of Science and Technology of China (was a joint student at Changchun Institute of Applied Chemistry, CAS). He started his research on OSCs and PLEDs in Olle Inganäs Lab in 1998. Later on, he worked at National Center for Polymer Research, Wright-Patterson Air Force Base and Argonne National Lab (USA). He joined Konarka as a Senior Scientist in 2008. In 2010, he joined National Center for Nanoscience and Technology as a full professor. His research focuses on functional materials and devices. He is RSC Fellow, the nominator for Xplorer Prize, and the Associate Editors for Science Bulletin and Journal of Semiconductors
Corresponding author: zuocht@nanoctr.cn; liufangyang@csu.edu.cn; ding@nanoctr.cn
Received Date: 2021-03-13
Published Date: 2021-05-10

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References(32)

References

[1]	Sutton R J, Eperon G E, Miranda L, et al. Bandgap-tunable cesium lead halide perovskites with high thermal stability for efficient solar cells. Adv Energy Mater, 2016, 6, 1502458 doi: 10.1002/aenm.201502458
[2]	Eperon G E, Stranks S D, Menelaou C, et al. Formamidinium lead trihalide: A broadly tunable perovskite for efficient planar heterojunction solar cells. Energy Environ Sci, 2014, 7, 982 doi: 10.1039/c3ee43822h
[3]	Wang Y, Dar M I, Ono L K, et al. Thermodynamically stabilized β-CsPbI₃-based perovskite solar cells with efficiencies > 18%. Science, 2019, 365, 591 doi: 10.1126/science.aav8680
[4]	Zhang J, Hodes G, Jin Z, et al. All-inorganic CsPbX₃ perovskite solar cells: Progress and prospects. Angew Chem Int Ed, 2019, 58, 15596 doi: 10.1002/anie.201901081
[5]	Yoon S M, Min H, Kim J B, et al. Surface engineering of ambient-air-processed cesium lead triiodide layers for efficient solar cells. Joule, 2021, 5, 183 doi: 10.1016/j.joule.2020.11.020
[6]	Sutton R J, Filip M R, Haghighirad A A, et al. Cubic or orthorhombic? Revealing the crystal structure of metastable black-phase CsPbI₃ by theory and experiment. ACS Energy Lett, 2018, 3, 1787 doi: 10.1021/acsenergylett.8b00672
[7]	Yao H, Zhao J, Li Z, et al. Research and progress of black metastable phase CsPbI₃ solar cells. Mater Chem Front, 2021, 5, 1221 doi: 10.1039/D0QM00756K
[8]	Li Z, Yang M, Park J S, et al. Stabilizing perovskite structures by tuning tolerance factor: Formation of formamidinium and cesium lead iodide solid-state alloys. Chem Mater, 2016, 28, 284 doi: 10.1021/acs.chemmater.5b04107
[9]	Fang Z, Meng X, Zuo C, et al. Interface engineering gifts CsPbI_2.25Br_0.75 solar cells high performance. Sci Bull, 2019, 64, 1743 doi: 10.1016/j.scib.2019.09.023
[10]	Ho-Baillie A, Zhang M, Lau C F J, et al. Untapped potentials of inorganic metal halide perovskite solar cells. Joule, 2019, 3, 938 doi: 10.1016/j.joule.2019.02.002
[11]	Fang Z, Liu L, Zhang Z, et al. CsPbI_2.25Br_0.75 solar cells with 15.9% efficiency. Sci Bull, 2019, 64, 507 doi: 10.1016/j.scib.2019.04.013
[12]	Jia X, Zuo C, Tao S, et al. CsPb(I_xBr₁₋_x)₃ solar cells. Sci Bull, 2019, 64, 1532 doi: 10.1016/j.scib.2019.08.017
[13]	Liu L, Xiao Z, Zuo C, et al. Inorganic perovskite/organic tandem solar cells with efficiency over 20%. J Semicond, 2021, 42, 020501 doi: 10.1088/1674-4926/42/2/020501
[14]	Zhang Z, Li J, Fang Z, et al. Adjusting energy level alignment between HTL and CsPbI₂Br to improve solar cell efficiency. J Semicond, 2021, 42, 030501 doi: 10.1088/1674-4926/42/2/030501
[15]	Wang P, Wang H, Mao Y, et al. Organic ligands armored ZnO enhances efficiency and stability of CsPbI₂Br perovskite solar cells. Adv Sci, 2020, 7, 2000421 doi: 10.1002/advs.202000421
[16]	Patil J V, Mali S S, Hong C K. A-site rubidium cation-incorporated CsPbI₂Br all-inorganic perovskite solar cells exceeding 17% efficiency. Sol RRL, 2020, 4, 2000164 doi: 10.1002/solr.202000164
[17]	Chen W, Chen H, Xu G, et al. Precise control of crystal growth for highly efficient CsPbI₂Br perovskite solar cells. Joule, 2019, 3, 191 doi: 10.1016/j.joule.2018.10.011
[18]	Lin Z Q, Qiao H W, Zhou Z R, et al. Water assisted formation of highly oriented CsPbI₂Br perovskite films with the solar cell efficiency exceeding 16%. J Mater Chem A, 2020, 8, 17670 doi: 10.1039/D0TA05118G
[19]	Wang A, Deng X, Wang J, et al. Ionic liquid reducing energy loss and stabilizing CsPbI₂Br solar cells. Nano Energy, 2021, 81, 105631 doi: 10.1016/j.nanoen.2020.105631
[20]	Han Y, Zhao H, Duan C, et al. Controlled n-doping in air-stable CsPbI₂Br perovskite solar cells with a record efficiency of 16.79%. Adv Funct Mater, 2020, 30, 1909972 doi: 10.1002/adfm.201909972
[21]	Shang Y, Fang Z, Hu W, et al. Efficient and photostable CsPbI₂Br solar cells realized by adding PMMA. J Semicond, 2021, 42, 050501 doi: 10.1088/1674-4926/42/2/050501
[22]	Mali S S, Patil J V, Shinde P S, et al. Fully air-processed dynamic hot-air-assisted M:CsPbI₂Br (M: Eu²⁺, In³⁺) for stable inorganic perovskite solar cells. Matter, 2021, 4, 635 doi: 10.1016/j.matt.2020.11.008
[23]	He J, Liu J, Hou Y, et al. Surface chelation of cesium halide perovskite by dithiocarbamate for efficient and stable solar cells. Nat Commun, 2020, 11, 4237 doi: 10.1038/s41467-020-18015-5
[24]	Fan Y, Fang J, Chang X, et al. Scalable ambient fabrication of high-performance CsPbI₂Br solar cells. Joule, 2019, 3, 2485 doi: 10.1016/j.joule.2019.07.015
[25]	Zuo C, Scully A D, Tan W L, et al. Crystallisation control of drop-cast quasi-2D/3D perovskite layers for efficient solar cells. Commun Mater, 2020, 1, 33 doi: 10.1038/s43246-020-0036-z
[26]	Zuo C, Scully A D, Vak D, et al. Self-assembled 2D perovskite layers for efficient printable solar cells. Adv Energy Mater, 2019, 9, 1803258 doi: 10.1002/aenm.201803258
[27]	Zuo C, Ding L. Drop-casting enables making efficient perovskite solar cells under high humidity. Angew Chem Int Ed, 2021 doi: 10.1002/anie.202101868
[28]	Xu G, Xue R, Chen W, et al. New strategy for two-step sequential deposition: Incorporation of hydrophilic fullerene in second precursor for high-performance p-i-n planar perovskite solar cells. Adv Energy Mater, 2018, 8, 1703054 doi: 10.1002/aenm.201703054
[29]	Bi D, Yi C, Luo J, et al. Polymer-templated nucleation and crystal growth of perovskite films for solar cells with efficiency greater than 21%. Nat Energy, 2016, 1, 16142 doi: 10.1038/nenergy.2016.142
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Drop-coating produces efficient CsPbI₂Br solar cells

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Drop-coating produces efficient CsPbI₂Br solar cells

DOI: 10.1088/1674-4926/42/5/050502

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Drop-coating produces efficient CsPbI2Br solar cells

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Drop-coating produces efficient CsPbI2Br solar cells

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Drop-coating produces efficient CsPbI₂Br solar cells

Drop-coating produces efficient CsPbI₂Br solar cells