Correlation between the fine structure of spin-coated PEDOT:PSS and the photovoltaic performance of organic/crystalline-silicon heterojunction solar cells

被引：48

作者：

Funda, Shuji ^{[1
]}

Ohki, Tatsuya ^{[1
]}

Liu, Qiming ^{[1
]}

Hossain, Jaker ^{[1
]}

Ishimaru, Yoshihiro ^{[1
]}

Ueno, Keiji ^{[1
]}

Shirai, Hajime ^{[1
]}

机构：

[1] Saitama Univ, Grad Sch Sci & Engn, Saitama 3388570, Japan

来源：

JOURNAL OF APPLIED PHYSICS | 2016年 / 120卷 / 03期

关键词：

THIN-FILMS; OPTICAL-PROPERTIES; POLY(3,4-ETHYLENEDIOXYTHIOPHENE); CONDUCTIVITY; FABRICATION; MORPHOLOGY; ACID;

D O I：

10.1063/1.4958845

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We investigated the relationship between the fine structure of spin-coated conductive polymer poly(3,4-ethylenedioxythiphene):poly(styrene sulfonate) (PEDOT:PSS) films and the photovoltaic performance of PEDOT:PSS crystalline-Si (PEDOT:PSS/c-Si) heterojunction solar cells. Real-time spectroscopic ellipsometry revealed that there were two different time constants for the formation of the PEDOT:PSS network. Upon removal of the polar solvent, the PEDOT:PSS film became optically anisotropic, indicating a conformational change in the PEDOT and PSS chain. Polarized Fourier transform infrared attenuated total reflection absorption spectroscopy and Raman spectroscopy measurements also indicated that thermal annealing promoted an in-plane pi-conjugated C-alpha-C-beta configuration attributed to a thiophene ring in PEDOT and an out-of-plane configuration of -SO3 groups in the PSS chain with increasing composition ratio of oxidized (benzoid) to neutral (quinoid) PEDOT, I-qui/I-ben. The highest power conversion efficiency for the spin-coated PEDOT:PSS/c-Si heterojunction solar cells was 13.3% for I-qui/I-ben -9-10 without employing any light harvesting methods. Published by AIP Publishing.

引用

页数：7

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