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Room temperature PL spectra of AlGaInP/GaInP/AlGaInP DHs grown under different conditions.
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Yurun Sun, Kuilong Li, Xulu Zeng. Influence of GaInP ordering on the performance of GaInP solar cells[J]. Journal of Semiconductors, 2016, 37(7): 073001. doi: 10.1088/1674-4926/37/7/073001
Y R Sun, K L Li, X L Zeng. Influence of GaInP ordering on the performance of GaInP solar cells[J]. J. Semicond., 2016, 37(7): 073001. doi: 10.1088/1674-4926/37/7/073001.
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Influence of GaInP ordering on the performance of GaInP solar cells
doi: 10.1088/1674-4926/37/7/073001
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Abstract
CuPt-type ordering with undesirable properties always occurs in GaInP at growth conditions that are very close to those leading to the highest quality material in metal organic chemical vapor deposition. In this work, highly disordered GaInP with high crystalline quality was obtained by optimizing growth conditions. Room-temperature and low-temperature photoluminescence (PL) spectra of AlGaInP/GaInP/AlGaInP double heterostructures (DHs) reveal that the band edge emission intensity is enhanced by optimizing growth temperature, V/Ⅲ ratio, and reactor pressure at the expense of low energy peak originating from spatially indirect recombination due to the ordering-related defects. The DH sample with less ordering-related defects demonstrates a longer effective minority carrier lifetime, consequently, the GaInP solar cell shows a significant improvement in the performance.-
Keywords:
- MOCVD,
- GaInP,
- ordering,
- solar cell
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References
[1] [2] [3] [4] [5] [6] [7] [8] [9] Sasaki K, Agui T, Nakaido K, et al. Development of InGaP/GaAs inverted triple junction concentrator solar cells. Proceedings of 9th International Conference on Concentrating Photovoltaics Systems, Miyazaki, Japan 2013[10] King R R, Ermer J H, Joslin D E, et al. Double heterostructures for characterization of bulk lifetime and interface recombination velocity in III-V multijunction solar cells. The 2nd World Conference on Photovoltaic Solar Energy Conversion, Vienna, Austria, 86, 1998[11] [12] [13] [14] [15] [16] [17] [18] [19] [20] [21] -
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