异质结太阳能电池的仿真模拟研究和界面态密度对效率的影响

材料导报

2019, Vol. 33

Issue (Z2): 28-31

无机非金属及其复合材料

异质结太阳能电池的仿真模拟研究和界面态密度对效率的影响

周理想, 黄仕华, 吴锋民

浙江师范大学固体光电器件省级重点实验室,金华 321004

Simulated Simulation of Heterojunction Solar Cells and the Effect ofInterface State Density on Efficiency

ZHOU Lixiang, HUANG Shihua, WU Fengmin

Provincial Key Laboratory of Solid State Optoelectronic Devices, Zhejiang Normal University,Jinhua 321004

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摘要大量文献已经报道非晶硅/晶体硅异质结电池每层材料的参数对电池的影响,如厚度、掺杂浓度等,但是并没有进一步给出透明导电氧化物薄膜TCO的功函数对电池的影响以及如何选择合适的TCO,也很少有报道界面态密度对异质结太阳能电池的影响机理。本研究表明,对于n型单晶硅片为衬底的异质结电池,发射场的TCO功函数越大越好,最佳范围是5.4~6.3 eV。对于背场的TCO功函数越小越好,最佳范围是3.6~4.0 eV。另外研究表明,对于n型衬底的非晶硅/晶体硅异质结电池(HIT电池),与衬底背面与非晶硅的界面态(Dit2)相比,衬底前表面与非晶硅的界面态(Dit1)是影响电池性能的主要因素,并且Dit1和Dit2态中,与类施主态相比,对电池效率起到主要影响作用的都是类受主态。

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关键词: 异质结太阳能电池模拟功函数缺陷密度

Abstract: Alarge number of literatures have reported the influence of the parameters of each layer of amorphous silicon/crystalline silicon heterojunction battery on the battery, such as thickness, doping concentration, etc., but did not further give the work function of the transparent conductive oxide film TCO to the battery or the impact and how to choose the right TCO. And there are few reports on how interface state density affects heterojunction solar cells. Through this study, it showed that for heterojunction cells with n-type single crystal silicon wafer as the substrate, the larger the TCO work function of the emission field is, the better, the best range is 5.4—6.3 eV. The smaller the TCO work function for the back field, the better. The best range is 3.6—4.0 eV. In addition, studies have shown that, compared with the interface state of the back surface and amorphous silicon (Dit2),the interface state of the front surface of the amorphous silicon/crystalline silicon heterojunction cell (HIT cell) of the n-type substrate with amorphous silicon (Dit1) has a major influence on the performance of battery, and in the Dit1 and Dit2 states, compared with the class donor state, the class acceptor state has a major influence on the battery efficiency.

Key words: heterojunction solar cell simulation work function defect density

出版日期: 2019-11-25 发布日期: 2019-11-25

ZTFLH:

O475

基金资助: 浙江省自然科学基金(LY17F040001);复旦大学表面物理实验室(国家重点实验室)开放项目(KF2015_02);中国科学院红外物理国家实验室开放项目(M201503)

通讯作者: huangshihua@zjnu.cn

作者简介: 周理想,男,安徽合肥人,浙江师范大学学生,硕士,主要从事硅基太阳能电池的研究。
黄仕华,男,江西南城人,浙江师范大学教授,博士。主要从事高效晶体硅太阳能电池的研究。

引用本文:

周理想, 黄仕华, 吴锋民. 异质结太阳能电池的仿真模拟研究和界面态密度对效率的影响[J]. 材料导报, 2019, 33(Z2): 28-31.
ZHOU Lixiang, HUANG Shihua, WU Fengmin. Simulated Simulation of Heterojunction Solar Cells and the Effect ofInterface State Density on Efficiency. Materials Reports, 2019, 33(Z2): 28-31.

链接本文:

http://www.mater-rep.com/CN/ 或 http://www.mater-rep.com/CN/Y2019/V33/IZ2/28

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