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Title: Fully solution-processed TCO-free semitransparent perovskite solar cells for tandem and flexible applications
Authors: Zhang, Y 
Wu, Z 
Li, P 
Ono, LK
Qi, Y
Zhou, J 
Shen, H
Surya, C 
Zheng, Z 
Keywords: Perovskite solar cells
Semitransparent solar cells
Solution processing
Tandem solar cells
TCO-free solar cells
Issue Date: 2017
Publisher: Wiley-VCH
Source: Advanced energy materials, 2017, p. 2 How to cite?
Journal: Advanced energy materials 
Abstract: Semitransparent perovskite solar cells (st-PSCs) have received remarkable interest in recent years because of their great potential in applications for solar window, tandem solar cells, and flexible photovoltaics. However, all reported st-PSCs require expensive transparent conducting oxides (TCOs) or metal-based thin films made by vacuum deposition, which is not cost effective for large-scale fabrication: the cost of TCOs is estimated to occupy ≈75% of the manufacturing cost of PSCs. To address this critical challenge, this study reports a low-temperature and vacuum-free strategy for the fabrication of highly efficient TCO-free st-PSCs. The TCO-free st-PSC on glass exhibits 13.9% power conversion efficiency (PCE), and the four-terminal tandem cell made with the st-PSC top cell and c-Si bottom cell shows an overall PCE of 19.2%. Due to the low processing temperature, the fabrication of flexible st-PSCs is demonstrated on polyethylene terephthalate and polyimide, which show excellent stability under repeated bending or even crumbing.
ISSN: 1614-6832
EISSN: 1614-6840
DOI: 10.1002/aenm.201701569
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