Tuning of the Contact Properties for High Efficiency Si/PEDOT:PSS Heterojunction Solar Cells

被引：87

作者：

Yang, Zhenhai ^{[1
]}

Gao, Pingqi ^{[1
]}

He, Jian ^{[1
]}

Chen, Wenchao ^{[2
]}

Yin, Wen-Yan ^{[2
]}

Zeng, Yuheng ^{[1
]}

Guo, Wei ^{[1
]}

Ye, Jichun ^{[1
]}

Cui, Yi ^{[3
]}

机构：

[1] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Zhejiang, Peoples R China

[2] Zhejiang Univ, Coll Informat Sci & Elect Engn, Hangzhou 310027, Zhejiang, Peoples R China

[3] Stanford Univ, Dept Mat Sci & Engn, Stanford, CA 94305 USA

来源：

ACS ENERGY LETTERS | 2017年 / 2卷 / 03期

基金：

中国国家自然科学基金;

关键词：

INVERTED NANOPYRAMID ARRAYS; BROAD-BAND; PERFORMANCE; LAYER; FILM; PEDOTPSS; SURFACE; PASSIVATION; IMPROVEMENT; INTERFACE;

D O I：

10.1021/acsenergylett.7b00015

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Heterojunction solar cells (HSCs) featuring half and full contact of poly(3,4-ethylenedioxythiophene):polystyrene (PEDOT:PSS) with pyramid-textured silicon (Si) were thoroughly compared via simulations and experiments, and the following conclusions have been reached: (1) The insufficient electrical passivation inherent to the half contact results in enormous decline in short-circuit current density (J(sc)) and open-circuit voltage (V-oc). (2) For the full-contact HSCs, J(sc) is mainly dependent on the recombination at the rear interface. With tuning of the contact properties from both sides, calculated (experimental) efficiencies of 14.46%/16.89% (13.94%/16.21%) for the half-/full-contact HSCs were finally obtained. A superior power conversion efficiency (PCE) over 21% is further predicted by considering more optimal contact resistance as well as doping concentration of Si. Our findings clarify why textured-Si/PEDOT:PSS HSCs show V-oc and PCE that are inferior to those of planar counterparts in previous reports and further suggest a pathway to fully explore the efficiency potential of Si/PEDOT:PSS hybrid solar cells.

引用

页码：556 / 562

页数：7

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