Generation and collection of photocarriers in dilute nitride GaInNAsSb solar cells
Generation and collection of photocarriers in dilute nitride GaInNAsSb solar cells
复制标题
稀氮化物 GaInNAsSb 太阳能电池中光载流子的产生和收集
DOI：
10.1002/pip.2641
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
Y. Okada
中科院分区：
文献类型：
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作者：
N. Miyashita;N. Ahsan;Y. Okada
一个改进的光电流生产证明在稀氮化物GaInNAsSb太阳能电池生长的分子束外延。通过将GaInNAsSb层的厚度从1.0 μ m增加到3.0 μm来研究光伏特性。光子吸收量随着厚度的增加而增加。然而，在2.0 μ m和3.0 μm厚的GaInNAsSb器件中观察到不完全的光生载流子收集。此特征是由于GaInNAsSb区域中部分缺乏电场。为了在电场的辅助下实现完整的载流子收集，在厚的未掺杂GaInNAsSb吸收层中，背景掺杂水平应低至~1014 cm−3。在这里，示出了退火对改善场辅助载流子收集的有效性。这归因于GaInNAsSb层中的背景掺杂的减少。在适当设计的1.0-eV GaInNAsSb电池器件中，证明了在长于GaAs带隙的波长处，外量子效率可以高达90%。版权所有© 2015约翰威利父子有限公司.
An improved photocurrent production is demonstrated in dilute nitride GaInNAsSb solar cells grown by molecular beam epitaxy. The photovoltaic properties were investigated by increasing the thickness of GaInNAsSb layers from 1.0 to 3.0 µm. The amount of photon absorption increased with increasing thickness. Yet an incomplete photocarrier collection was observed in the 2.0‐ and 3.0‐µm‐thick GaInNAsSb devices. This feature is due to a partial lack of electric field in the GaInNAsSb region. In order for complete carrier collection aided by the electric field, the background‐doping level should be as low as ~1014 cm−3 in a thick undoped‐GaInNAsSb absorption layer. Here, the effectiveness of annealing on improving the field‐assisted carrier collection is shown. This is ascribed to a decrease of the background doping in the GaInNAsSb layer. In a properly designed device for a 1.0‐eV GaInNAsSb cell, it is demonstrated that the external quantum efficiency can reach as high as 90% at wavelengths longer than the GaAs bandgap. Copyright © 2015 John Wiley & Sons, Ltd.
DOI：
10.1143/jjap.35.1273
发表时间：
1996-02-01
期刊：
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS
影响因子：
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作者：
Kondow, M;Uomi, K;Yazawa, Y
通讯作者：
Yazawa, Y
增强 GaInNAs:Sb 太阳能电池中的载流子收集
DOI：
--
发表时间：
2016
期刊：
影响因子：
--
作者：
Naoya Miyashita;Nazmul Ahsan;and Yoshitaka Okada
通讯作者：
and Yoshitaka Okada