Using a low temperature crystallization process to prepare anatase TiO2 buffer layers for air-stable inverted polymer solar cells

Jen-Hsien Huang; Hung-Yu Wei; Kuan-Chieh Huang; Cheng-Lun Chen; Rui-Ren Wang; Fang-Chung Chen; Kuo-Chuan Ho; Chih-Wei Chu

doi:10.1039/B922373H

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Using a low temperature crystallization process to prepare anatase TiO₂buffer layers for air-stable inverted polymer solar cells†

Jen-Hsien Huang,^a Hung-Yu Wei,^b Kuan-Chieh Huang,^c Cheng-Lun Chen,^c Rui-Ren Wang,^d Fang-Chung Chen,^e Kuo-Chuan Ho*^bc and Chih-Wei Chu*^ae

Author affiliations

* Corresponding authors

^a Research Center for Applied Sciences, Academia Sinica, Taipei, Taiwan
E-mail: gchu@gate.sinica.edu.tw

^b Institute of Polymer Science and Engineering, National Taiwan University, Taipei, Taiwan
E-mail: kcho@ntu.edu.tw

^c Department of Chemical Engineering, National Taiwan University, Taipei, Taiwan

^d Energy Textiles Section Department of Products, Taiwan Textile Research Institute, Taipei, Taiwan

^e Department of Photonics, National Chiao Tung University, Hsinchu, Taiwan

Abstract

In this study, we fabricated inverted polymer solar cells featuring titanium dioxide (TiO₂) as the electron collection layer and vanadium (V) oxide (V₂O₅) as the hole collection layer. TiO₂ films (anatase phase) were prepared by combining electrochemical deposition with high-pressure crystallization. The low temperature process used to obtain the TiO₂ films minimized interdiffusion of Ti and In species between the TiO₂ and ITO films and maintained the conductivity of the indium tin oxide substrate. The inverted device reached a power conversion efficiency of 3.22% and exhibited much better stability under ambient conditions relative to that of the corresponding conventional device.

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Supplementary files

SEM and AFM images for TiO ₂ annealed at different temperatures and peformances statistics for the BHJ devices. PDF (409K)

Article information

DOI: https://doi.org/10.1039/B922373H
Article type: Paper
Submitted: 26 Oct 2009
Accepted: 05 Feb 2010
First published: 19 Mar 2010

Download Citation

Energy Environ. Sci., 2010,3, 654-658

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Using a low temperature crystallization process to prepare anatase TiO₂ buffer layers for air-stable inverted polymer solar cells

J. Huang, H. Wei, K. Huang, C. Chen, R. Wang, F. Chen, K. Ho and C. Chu, Energy Environ. Sci., 2010, 3, 654 DOI: 10.1039/B922373H

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