%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 }