Low-temperature-deposited SnO2 films for efficient planar CH3NH3PbI3 photovoltaics
Low-temperature-deposited SnO2 films for efficient planar CH3NH3PbI3 photovoltaics
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用于高效平面 CH3NH3PbI3 光伏发电的低温沉积 SnO2 薄膜
DOI：
10.1007/s10853-020-05216-y
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发表时间：
2020-09
影响因子：
4.5
通讯作者：
Hao Wang
中科院分区：
文献类型：
--
作者：
Kai Zhang;Jinxia Duan;Feng Liu;Jun Zhang;Hao Wang
钙钛矿太阳能电池（PeSC）的工业化和灵活性需要低温合成电子传输层（ETL）。 SnO 2 ETLs是通过低温化学浴沉积制备的。通过 100 °C 热处理，从 0.3 M SnCl 4 溶液中获得具有高结晶度和透射率的均匀 SnO 2 ETL。它们有效地传输电子并减弱基于 SnO 2 的光伏电池的复合损失。 SnO 2 基 PeSC 的功率转换效率 (PCE) 为 16.92%，短路电流密度 (J SC ) 为 21.48 mA cm -2 ，填充因子 (FF) 为 73.62%。提出了二次浴改性来修复 SnO 2 ETL 的表面针孔并提高 SnO 2 基器件的光电性能。与未修饰的器件相比，基于改性SnO 2 (2-SnO 2 )薄膜的器件的光伏性能由于更少的针孔和受抑制的表面缺陷而表现出令人印象深刻的提高。 2-SnO 2 基光伏电池的开路电压 (VOC) 和 FF 分别提高至 1.10 V 和 76.71%，PCE 提高至 18.04%。同时，由于二次浴细化了 ETL 的表面纳米颗粒，钝化了缺陷并减少了 ETL/钙钛矿界面处的电荷复合，因此 2-SnO 2 基 PeSC 的暗电流和磁滞现象减少。因此，基于2-SnO 2 的大面积（~ 1 cm 2 ）光伏电池实现了12.91%的效率。
Low-temperature-synthesized electron transport layers (ETLs) are in demand for the industrialization and flexibility of perovskite solar cells (PeSCs). SnO 2 ETLs are prepared via chemical bath deposition at low temperature. Uniform SnO 2 ETLs with high crystallinity and transmittance are obtained from a 0.3 M SnCl 4 solution through a 100 °C heat treatment. They effectively transport electrons and weaken recombination loss in SnO 2 -based photovoltaics. SnO 2 -based PeSCs exhibit a power conversion efficiency (PCE) of 16.92% with a short-circuit current density ( J SC ) of 21.48 mA cm −2 and a fill factor (FF) of 73.62%. Secondary bath modification is proposed to mend the surface pinholes of SnO 2 ETLs and boost the photoelectric properties of SnO 2 -based devices. The photovoltaic performance of the devices based on modified SnO 2 (2-SnO 2 ) films exhibits an impressive increase compared with unembellished ones due to less pinholes and suppressed surface defects. The open circuit voltage ( V OC ) and FF of 2-SnO 2 -based photovoltaics are enhanced to 1.10 V and 76.71%, respectively, resulting in PCE to 18.04%. Simultaneously, the dark current and hysteresis of 2-SnO 2 -based PeSCs are reduced because the secondary bath refines the surface nanoparticles of ETLs, passivates defects and reduces charge recombination at ETL/perovskite interfaces. Accordingly, 2-SnO 2 -based photovoltaics with a large area (~ 1 cm 2 ) achieves 12.91% efficiency.
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影响因子：
3.7
作者：
O'Regan, Brian C.;Durrant, James R.;Bakker, Nicolaas J.
通讯作者：
Bakker, Nicolaas J.
影响因子：
56.9
作者：
Lee, Michael M.;Teuscher, Joel;Snaith, Henry J.
通讯作者：
Snaith, Henry J.
影响因子：
16.6
作者：
通讯作者：
--
影响因子：
16.6
作者：
Duan, Jialong;Zhao, Yuanyuan;Tang, Qunwei
通讯作者：
Tang, Qunwei
低温%20In%20原位%20氨基%20功能化%20of%20TiO2%20纳米颗粒%20锐化%20电子%20管理%20实现%20over%2021%%20高效%20平面%20钙钛矿%20太阳能%20电池
影响因子：
29.4
作者：
Hu, Wanpei;Zhou, Weiran;Yang, Shangfeng
通讯作者：
Yang, Shangfeng