论文总字数：18509字

摘 要

目前, 市场上太阳能电池的光伏应用主要分为薄膜型和结晶型两大类，而薄膜型太阳能电池中CIGS电池被认定是具有很好前景的电池。为了减少光吸收损失,使得入射光子的能量与吸收材料的带隙相匹配，可以把带隙不同的材料组合起来作为光吸收材料，构成叠层太阳能材料。现阶段，叠层 CIGS电池的相关研究在文献中鲜见报道，所以十分有必要在理论上对其性能进行系统研究。我们利用SCAPS和TFcalc软件对叠层CIGS电池进行模拟研究。通过此次模拟研究我们发现叠层CIGS电池的上下电池的厚度、带隙以及掺杂均会影响电池的效率。由于上电池材料带隙的限制，电池效率能够达到17%左右。因此仍需通过优化叠层结构，为未来制备高效率CIGS太阳能电池提供有价值的参考思路。

关键词：叠层铜铟镓硒太阳能电池 电流匹配 隧穿结 电池模拟分析

Simulation and analysis of laminated CIGS solar cell

Abstract

Nowadays，Photovoltaic application of solar cells on the market is mainly divided into two categories ：film and crystallization. In film cells,CIGS is considered as one of having the best propects cells. In order to reduce the loss of light absorption, making the band gaps of photon energy and absorption materials natch each other, the different materials having different band gap can be combined as absorbing materials, so formed the laminated cells. At this stage, the related research of the laminated CIGS solar cell is rarely reported in the literature, it is necessary in theory to study its performance. We use SCAPS and TFcalc software studies on laminated CIGS cells. Through the simulation we find that the thickness ，band gap and doping of the battery will affect the efficiency of the battery. Because of the limitation of battery’s band gap，the efficiency can reach 17%. So we still need to optimize the structure of laminated cell,this will provide vaiuable ideas for making high efficiency CIGS cells in the future.

Key words: laminated CIGS solar cell；short circuit matching；tunnel junction ；simulation

目 录

摘 要-------------------------------------------------------------------------------------------------------I

Abstract----------------------------------------------------------------------------------------------------II

目 录---------------------------------------------------------------------------------------------------------I

第一章 绪论----------------------------------------------------------------------------------------------1

1.1研究背景及意义----------------------------------------------------------------------------------1

1.2铜铟镓硒太阳能电池基本理论----------------------------------------------------------------2

1.2.1铜铟镓硒太阳能电池工作原理--------------------------------------------------------2

1.2.2铜铟镓硒太阳能电池基本结构及材料特性-----------------------------------------2

1.2.3铜铟镓硒太阳能电池吸收层制备技术-----------------------------------------------4

1.2.4铜铟稼硒太阳能电池光伏特性影响因素--------------------------------------------6

1.3叠层电池相关理论-------------------------------------------------------------------------------7

1.3.1叠层电池模型-----------------------------------------------------------------------------7

1.3.2隧穿结--------------------------------------------------------------------------------------8

1.3.3电流匹配-----------------------------------------------------------------------------------9

1.4 理论模拟意义-------------------------------------------------------------------------------------9

第二章 叠层铜铟镓硒太阳能电池模拟理论------------------------------------------------10

2.1模拟理论基础-------------------------------------------------------------------------------------10

2.2仿真软件SCAPS简介--------------------------------------------------------------------------10

2.2.1SCAPS软件功能介绍--------------------------------------------------------------------10

2.2.2SCAPS模拟软件界面--------------------------------------------------------------------11

2.3 TFcalc模拟程序介绍----------------------------------------------------------------------------13

第三章 叠层铜铟镓硒太阳能电池模拟计算------------------------------------------------14

3.1SCAPS模拟软件所需半导体层参数----------------------------------------------------------14

3.2 SCAPS模拟所需外部参数---------------------------------------------------------------------15

3.3TFCalc模拟所需参数----------------------------------------------------------------------------15

第四章 结果及讨论-----------------------------------------------------------------------------------17

4.1叠层CIGS电池性能模拟计算---------------------------------------------------------------17

4.1.1 SCAPS程序电性能模拟结果--------------------------------------------------------17

4.1.2 TFclac透明度模拟结果------------------------------------------------------------17

4.1.3 下电池QE图像------------------------------------------------------------------------18

4.2 讨论结果----------------------------------------------------------------------------------------19

4.2.1 CGS厚度和CIGS厚度对电池性能的影响---------------------------------------19

4.2.2 CIGS带隙宽度和CGS带隙宽度对电池性能的影响---------------------------20

4.3综合结果优化讨论-----------------------------------------------------------------------------22

展望---------------------------------------------------------------------------------------------------------22

参考文献--------------------------------------------------------------------------------------------------23

致谢---------------------------------------------------------------------------------------------------------25

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