Silicon/Organic Hybrid Solar Cells with 16.2% Efficiency and Improved Stability by Formation of Conformal Heterojunction Coating and Moisture-Resistant Capping Layer

Jian He; Pingqi Gao; Zhenhai Yang; Jing Yu; Wei Yu; Yu Zhang; Jiang Sheng; Jichun Ye; Joseph Chen Amine; Yi Cui

doi:10.1002/adma.201606321

Silicon/Organic Hybrid Solar Cells with 16.2% Efficiency and Improved Stability by Formation of Conformal Heterojunction Coating and Moisture-Resistant Capping Layer

Adv Mater. 2017 Apr;29(15). doi: 10.1002/adma.201606321. Epub 2017 Feb 2.

Authors

Jian He¹, Pingqi Gao¹, Zhenhai Yang¹, Jing Yu¹, Wei Yu², Yu Zhang², Jiang Sheng¹, Jichun Ye¹, Joseph Chen Amine³, Yi Cui³

Affiliations

¹ Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China.
² Hebei Key Laboratory of Optic-Electronic Information Material, College of Physics Science and Technology, Hebei University, Baoding, 071002, China.
³ Department of Materials Science and Engineering, Stanford University, Stanford, CA, 94305, USA.

PMID: 28151568
DOI: 10.1002/adma.201606321

Abstract

Silicon/poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) heterojunction solar cells with 16.2% efficiency and excellent stability are fabricated on pyramid-textured silicon substrates by applying a water-insoluble ester as capping layer. This shows that a conformal coating of PEDOT:PSS on textured silicon can greatly improve the junction quality with the main stability failure routes related to the moisture-induced poly(3,4-ethylenedioxythiophene) aggregations and the tunneling silicon oxide autothickening.

Keywords: PEDOT:PSS; organic solar cells; silicon.