J. Semicond. > Volume 41 > Issue 5 > Article Number: 052204

Light-emitting diodes based on all-inorganic copper halide perovskite with self-trapped excitons

Nian Liu , Xue Zhao , Mengling Xia , Guangda Niu , Qingxun Guo , , Liang Gao and Jiang Tang

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Abstract: Light-emitting diodes based on lead halide perovskite have attracted great attention due to their outstanding performance. However, their application is plagued by the toxicity of Pb and the poor stability. Herein novel copper-based all inorganic perovskite CsCu2I3 with much enhanced stability has been reported with a potential photoluminescence quantum yield (PLQY) over 20% and self-trapped excitons (STE). By taking advantage of its extraordinary thermal stability, we successfully fabricate high-quality CsCu2I3 film through direct vacuum-based deposition (VBD) of CsCu2I3 powder. The resulting film shows almost the same PLQY with the synthesized powder, as well as excellent uniformity and stability. The perovskite light-emitting diodes (Pe-LED) based on the evaporated CsCu2I3 emitting layer achieve a luminescence of 10 cd/m2 and an external quantum efficiency (EQE) of 0.02%. To the best of our knowledge, this is the first CsCu2I3 Pe-LED fabricated by VBD with STE property, which offers a new avenue for lead-free Pe-LED.

Key words: light-emitting diodescopper halide perovskitevacuum-based evaporationself-trapped exciton

Abstract: Light-emitting diodes based on lead halide perovskite have attracted great attention due to their outstanding performance. However, their application is plagued by the toxicity of Pb and the poor stability. Herein novel copper-based all inorganic perovskite CsCu2I3 with much enhanced stability has been reported with a potential photoluminescence quantum yield (PLQY) over 20% and self-trapped excitons (STE). By taking advantage of its extraordinary thermal stability, we successfully fabricate high-quality CsCu2I3 film through direct vacuum-based deposition (VBD) of CsCu2I3 powder. The resulting film shows almost the same PLQY with the synthesized powder, as well as excellent uniformity and stability. The perovskite light-emitting diodes (Pe-LED) based on the evaporated CsCu2I3 emitting layer achieve a luminescence of 10 cd/m2 and an external quantum efficiency (EQE) of 0.02%. To the best of our knowledge, this is the first CsCu2I3 Pe-LED fabricated by VBD with STE property, which offers a new avenue for lead-free Pe-LED.

Key words: light-emitting diodescopper halide perovskitevacuum-based evaporationself-trapped exciton



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Wang Q, Wang X, Yang Z, et al. Efficient sky-blue perovskite light-emitting diodes via photoluminescence enhancement. Nat Commun, 2019, 10(1), 5633

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Ban M, Zou Y, Rivett J P H, et al. Solution-processed perovskite light emitting diodes with efficiency exceeding 15% through additive-controlled nanostructure tailoring. Nat Commun, 2018, 9(1), 3892

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Zhao X, Tan Z K. Large-area near-infrared perovskite light-emitting diodes. Nat Photon, 2019, 14, 215

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Cheng P, Sun L, Feng L, et al. Colloidal synthesis and optical properties of all-inorganic low-dimensional cesium copper halide nanocrystals. Angew Chem Int Ed Engl, 2019, 58(45), 16087

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Jun T, Sim K, Iimura S, et al. Lead-free highly efficient blue-emitting Cs3Cu2I5 with 0D electronic structure. Adv Mater, 2018, 30(43), e1804547

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Vashishtha P, Nutan G V, Griffith B E, et al. Cesium copper iodide tailored nanoplates and nanorods for blue, yellow, and white emission. Chem Mater, 2019, 31(21), 9003

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Hu Y, Wang Q, Shi Y L, et al. Vacuum-evaporated all-inorganic cesium lead bromine perovskites for high-performance light-emitting diodes. J Mater Chem C, 2017, 5(32), 8144

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Lin R, Guo Q, Zhu Q, et al. All-inorganic CsCu2I3 single crystal with high-PLQY (≈15.7%) intrinsic white-light emission via strongly localized 1D excitonic recombination. Adv Mater, 2019, 31, 1905079

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Chen W, Zhang J, Xu G, et al. A semitransparent inorganic perovskite film for overcoming ultraviolet light instability of organic solar cells and achieving 14.03% efficiency. Adv Mater, 2018, 30(21), e1800855

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Zhu X, Yang D, Yang R, et al. Superior stability for perovskite solar cells with 20% efficiency using vacuum co-evaporation. Nanoscale, 2017, 9(34), 12316

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Wang S, Yao Y, Kong J, et al. Highly efficient white-light emission in a polar two-dimensional hybrid perovskite. Chem Commun, 2018, 54(32), 4053

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Krishnamurthy S, Naphade R, Mir Wasim J, et al. Molecular and self-trapped excitonic contributions to the broadband luminescence in diamine-based low-dimensional hybrid perovskite systems. Adv Optical Mater, 2018, 1800751

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Li S, Hu Q, Luo J, et al. Self-trapped exciton to dopant energy transfer in rare earth doped lead-free double perovskite. Adv Opt Mater, 2019, 7, 1901098

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Li S, Luo J, Liu J, et al. Self-trapped excitons in all-inorganic halide perovskites: fundamentals, status, and potential applications. J Phys Chem Lett, 2019, 10(8), 1999

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Smith M D, Karunadasa H I. White-light emission from layered halide perovskites. Acc Chem Res, 2018, 51(3), 619

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Li J, Du P, Li S, et al. High-throughput combinatorial optimizations of perovskite light-emitting diodes based on all-vacuum deposition. Adv Funct Mater, 2019, 29(51), 1903607

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Du P, Li J, Wang L, et al. Vacuum-deposited blue inorganic perovskite light-emitting diodes. ACS Appl Mater Interfaces, 2019, 11(50), 47083

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Ma Z, Shi Z, Qin C, et al. Stable yellow light-emitting devices based on ternary copper halides with broadband emissive self-trapped excitons. ACS Nano, 2020, 14(4), 4475

[1]

Quan L N, Rand B P, Friend R H, et al. Perovskites for next-generation optical sources. Chem Rev, 2019, 119, 7444

[2]

Fakharuddin A, Shabbir U, Qiu W, et al. Inorganic and layered perovskites for optoelectronic devices. Adv Mater, 2019, 31(47), e1807095

[3]

Luo D, Chen Q, Qiu Y, et al. Device engineering for all-inorganic perovskite light-emitting diodes. Nanomaterials, 2019, 9(7), 1007

[4]

Lu M, Zhang Y, Wang S, et al. Metal halide perovskite light-emitting devices: promising technology for next-generation displays. Adv Funct Mater, 2019, 29(30), 1902008

[5]

Wang Q, Wang X, Yang Z, et al. Efficient sky-blue perovskite light-emitting diodes via photoluminescence enhancement. Nat Commun, 2019, 10(1), 5633

[6]

Ban M, Zou Y, Rivett J P H, et al. Solution-processed perovskite light emitting diodes with efficiency exceeding 15% through additive-controlled nanostructure tailoring. Nat Commun, 2018, 9(1), 3892

[7]

Zhao X, Tan Z K. Large-area near-infrared perovskite light-emitting diodes. Nat Photon, 2019, 14, 215

[8]

Cao Y, Wang N, Tian H, et al. Perovskite light-emitting diodes based on spontaneously formed submicrometre-scale structures. Nature, 2018, 562(7726), 249

[9]

Lin K, Xing J, Quan L, et al. Perovskite light-emitting diodes with external quantum efficiency exceeding 20 percent. Nature, 2018, 562, 245

[10]

Cho H, Kim Y H, Wolf C, et al. Improving the stability of metal halide perovskite materials and light-emitting diodes. Adv Mater, 2018, 30(42), e1704587

[11]

Cheng P, Sun L, Feng L, et al. Colloidal synthesis and optical properties of all-inorganic low-dimensional cesium copper halide nanocrystals. Angew Chem Int Ed Engl, 2019, 58(45), 16087

[12]

Jun T, Sim K, Iimura S, et al. Lead-free highly efficient blue-emitting Cs3Cu2I5 with 0D electronic structure. Adv Mater, 2018, 30(43), e1804547

[13]

Luo J, Wang X, Li S, et al. Efficient and stable emission of warm-white light from lead-free halide double perovskites. Nature, 2018, 563(7732), 541

[14]

Vashishtha P, Nutan G V, Griffith B E, et al. Cesium copper iodide tailored nanoplates and nanorods for blue, yellow, and white emission. Chem Mater, 2019, 31(21), 9003

[15]

Benin B M, Dirin D N, Morad V, et al. Highly emissive self-trapped excitons in fully inorganic zero-dimensional tin halides. Angew Chem Int Ed Engl, 2018, 57(35), 11329

[16]

Hu Y, Wang Q, Shi Y L, et al. Vacuum-evaporated all-inorganic cesium lead bromine perovskites for high-performance light-emitting diodes. J Mater Chem C, 2017, 5(32), 8144

[17]

Lin R, Guo Q, Zhu Q, et al. All-inorganic CsCu2I3 single crystal with high-PLQY (≈15.7%) intrinsic white-light emission via strongly localized 1D excitonic recombination. Adv Mater, 2019, 31, 1905079

[18]

Chen W, Zhang J, Xu G, et al. A semitransparent inorganic perovskite film for overcoming ultraviolet light instability of organic solar cells and achieving 14.03% efficiency. Adv Mater, 2018, 30(21), e1800855

[19]

Zhu X, Yang D, Yang R, et al. Superior stability for perovskite solar cells with 20% efficiency using vacuum co-evaporation. Nanoscale, 2017, 9(34), 12316

[20]

Liu M, Johnston M B, Snaith H J. Efficient planar heterojunction perovskite solar cells by vapour deposition. Nature, 2013, 501(7467), 395

[21]

Dohner E R, Jaffe A, Bradshaw L R, et al. Intrinsic white-light emission from layered hybrid perovskites. J Am Chem Soc, 2014, 136(38), 13154

[22]

Smith M D, Watson B L, Dauskardt R H, et al. Broadband emission with a massive stokes shift from sulfonium Pb–Br hybrids. Chem Mater, 2017, 29(17), 7083

[23]

Wang S, Yao Y, Kong J, et al. Highly efficient white-light emission in a polar two-dimensional hybrid perovskite. Chem Commun, 2018, 54(32), 4053

[24]

Krishnamurthy S, Naphade R, Mir Wasim J, et al. Molecular and self-trapped excitonic contributions to the broadband luminescence in diamine-based low-dimensional hybrid perovskite systems. Adv Optical Mater, 2018, 1800751

[25]

Li S, Hu Q, Luo J, et al. Self-trapped exciton to dopant energy transfer in rare earth doped lead-free double perovskite. Adv Opt Mater, 2019, 7, 1901098

[26]

Li S, Luo J, Liu J, et al. Self-trapped excitons in all-inorganic halide perovskites: fundamentals, status, and potential applications. J Phys Chem Lett, 2019, 10(8), 1999

[27]

Smith M D, Karunadasa H I. White-light emission from layered halide perovskites. Acc Chem Res, 2018, 51(3), 619

[28]

Li J, Du P, Li S, et al. High-throughput combinatorial optimizations of perovskite light-emitting diodes based on all-vacuum deposition. Adv Funct Mater, 2019, 29(51), 1903607

[29]

Du P, Li J, Wang L, et al. Vacuum-deposited blue inorganic perovskite light-emitting diodes. ACS Appl Mater Interfaces, 2019, 11(50), 47083

[30]

Ma Z, Shi Z, Qin C, et al. Stable yellow light-emitting devices based on ternary copper halides with broadband emissive self-trapped excitons. ACS Nano, 2020, 14(4), 4475

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N Liu, X Zhao, M L Xia, G D Niu, Q X Guo, L Gao, J Tang, Light-emitting diodes based on all-inorganic copper halide perovskite with self-trapped excitons[J]. J. Semicond., 2020, 41(5): 052204. doi: 10.1088/1674-4926/41/5/052204.

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History

Manuscript received: 01 March 2020 Manuscript revised: 07 April 2020 Online: Accepted Manuscript: 16 April 2020 Uncorrected proof: 20 April 2020 Published: 13 May 2020

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