Perovskite solar cells (PSCs) may offer huge potential in photovoltaic conversion, yet their practical applications face one major obstacle: their low stability, or quick degradation of their initial efficiencies. Here, a new design scheme is presented to enhance the PSC stability by using low-temperature hydrothermally grown hierarchical nano-SnO2 electron transport layers (ETLs). The ETL contains a thin compact SnO2 layer underneath a mesoporous layer of SnO2 nanosheets. The mesoporous layer plays multiple roles of enhancing photon collection, preventing moisture penetration and improving the long-term stability. Through such simple approaches, PSCs with power conversion efficiencies of ≈13% can be readily obtained, with the highest efficiency to be 16.17%. A prototypical PSC preserves 90% of its initial efficiency even after storage in air at room temperature for 130 d without encapsulation. This study demonstrates that hierarchical SnO2 is a potential ETL for fabricating low-cost and efficient PSCs with long-term stability.
%0 Journal Article
%1 ADFM:ADFM201600910
%A Liu, Qin
%A Qin, Min-Chao
%A Ke, Wei-Jun
%A Zheng, Xiao-Lu
%A Chen, Zhao
%A Qin, Ping-Li
%A Xiong, Liang-Bin
%A Lei, Hong-Wei
%A Wan, Jia-Wei
%A Wen, Jian
%A Yang, Guang
%A Ma, Jun-Jie
%A Zhang, Zhen-Yu
%A Fang, Guo-Jia
%D 2016
%J Advanced Functional Materials
%K airstable perovskite
%P n/a--n/a
%R 10.1002/adfm.201600910
%T Enhanced Stability of Perovskite Solar Cells with Low-Temperature Hydrothermally Grown SnO2 Electron Transport Layers
%U http://dx.doi.org/10.1002/adfm.201600910
%X Perovskite solar cells (PSCs) may offer huge potential in photovoltaic conversion, yet their practical applications face one major obstacle: their low stability, or quick degradation of their initial efficiencies. Here, a new design scheme is presented to enhance the PSC stability by using low-temperature hydrothermally grown hierarchical nano-SnO2 electron transport layers (ETLs). The ETL contains a thin compact SnO2 layer underneath a mesoporous layer of SnO2 nanosheets. The mesoporous layer plays multiple roles of enhancing photon collection, preventing moisture penetration and improving the long-term stability. Through such simple approaches, PSCs with power conversion efficiencies of ≈13% can be readily obtained, with the highest efficiency to be 16.17%. A prototypical PSC preserves 90% of its initial efficiency even after storage in air at room temperature for 130 d without encapsulation. This study demonstrates that hierarchical SnO2 is a potential ETL for fabricating low-cost and efficient PSCs with long-term stability.
@article{ADFM:ADFM201600910,
abstract = {Perovskite solar cells (PSCs) may offer huge potential in photovoltaic conversion, yet their practical applications face one major obstacle: their low stability, or quick degradation of their initial efficiencies. Here, a new design scheme is presented to enhance the PSC stability by using low-temperature hydrothermally grown hierarchical nano-SnO2 electron transport layers (ETLs). The ETL contains a thin compact SnO2 layer underneath a mesoporous layer of SnO2 nanosheets. The mesoporous layer plays multiple roles of enhancing photon collection, preventing moisture penetration and improving the long-term stability. Through such simple approaches, PSCs with power conversion efficiencies of ≈13% can be readily obtained, with the highest efficiency to be 16.17%. A prototypical PSC preserves 90% of its initial efficiency even after storage in air at room temperature for 130 d without encapsulation. This study demonstrates that hierarchical SnO2 is a potential ETL for fabricating low-cost and efficient PSCs with long-term stability.},
added-at = {2016-08-01T11:21:55.000+0200},
author = {Liu, Qin and Qin, Min-Chao and Ke, Wei-Jun and Zheng, Xiao-Lu and Chen, Zhao and Qin, Ping-Li and Xiong, Liang-Bin and Lei, Hong-Wei and Wan, Jia-Wei and Wen, Jian and Yang, Guang and Ma, Jun-Jie and Zhang, Zhen-Yu and Fang, Guo-Jia},
biburl = {https://www.bibsonomy.org/bibtex/25bf9477c08f965d07f1a669f8757e4fb/bretschneider_m},
doi = {10.1002/adfm.201600910},
interhash = {3c33422a7b95ce401ddc2cc55cb66fe0},
intrahash = {5bf9477c08f965d07f1a669f8757e4fb},
issn = {1616-3028},
journal = {Advanced Functional Materials},
keywords = {airstable perovskite},
pages = {n/a--n/a},
timestamp = {2016-08-01T11:21:55.000+0200},
title = {Enhanced Stability of Perovskite Solar Cells with Low-Temperature Hydrothermally Grown SnO2 Electron Transport Layers},
url = {http://dx.doi.org/10.1002/adfm.201600910},
year = 2016
}