| 镓(Ga)的含量及分布对CIGS薄膜电池量子效率的影响 |
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| 引用本文： | 李伟,孙云,刘伟,李凤岩,周琳.镓(Ga)的含量及分布对CIGS薄膜电池量子效率的影响[J].人工晶体学报,2006,35(1):131-134. |
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| 作者姓名： | 李伟 孙云 刘伟 李凤岩 周琳 |
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| 作者单位： | 南开大学光电子薄膜器件与技术研究所,天津,300071;天津市光电子薄膜器件与技术重点实验室,天津,300071;南开大学光电子薄膜器件与技术研究所,天津,300071 |
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| 基金项目： | 国家863计划项目(No.2004AA513020) |
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| 摘 要： | 采用两步法制备CuGaxIn1-xSe2薄膜,Cu-In-Ga金属预制层采用铜镓合金靶及铟靶通过磁控溅射方法沉积而成,采用固态源硒化法在硒蒸气密闭环境中硒化,通过调整镓(Ga)比例及分布控制CIGS薄膜的带隙,采用镓元素梯度分布,使CIGS薄膜带隙呈现抛物线状分布,电池的量子效率得到明显提高,制备出的CIGS薄膜电池开路电压与转换效率都得到很大程度的改善,电池最高转换效率已达9.4;.
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| 关 键 词： | 镓梯度分布 铜铟镓硒太阳电池 固态源硒化法 量子效率 |
| 文章编号： | 1000-985X（2006）01-0131-04 |
| 收稿时间： | 2005-07-11 |
| 修稿时间： | 2005-07-11 |
Effects of Proportion and Distribution of Gallium on Quantum Efficiency of CIGS Thin Film Solar Cell |
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| LI Wei,SUN Yun,LIU Wei,LI Feng-Yan,ZHOU Lin.Effects of Proportion and Distribution of Gallium on Quantum Efficiency of CIGS Thin Film Solar Cell[J].Journal of Synthetic Crystals,2006,35(1):131-134. |
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| Authors: | LI Wei SUN Yun LIU Wei LI Feng-Yan ZHOU Lin |
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| Institution: | 1. Institute of Photo-electronics Thin Fill Devices and Technique, Nankai University. Tianjin 300071, China; 2. Key Laboratory of Photo-electronics Thin Film Devices and Technique of Tianjin, Tianjin 300071, China |
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| Abstract: | The CIGS thin films were deposited by the two-step growth process using sputtering and selenization system on Mo-coated soda lime glass substrates.The solid selenium was used as Se source instead of H_2Se because of its toxicity.Many films with various kinds of gallium content grades in CIGS absorber were fabricated and investigated.We found that it is possible to prepare a CIGS thin film to improve the efficiency and voltage in the same device by appropriate grading.Band gap grading was achieved by compositional Ga/(ln Ga) profiling as a function of depth.The quantum efficiency reveals that the optimization of gallium grading has a great influence on the performance of CIGS solar cells.The best solar cell with an active area of 1.2cm~2 and the double profiling band gap structure gained the highest efficiency of 9.4%. |
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| Keywords: | gallium grading CIGS solar cell selenization quantum efficiency |
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