Low-temperature solution-combustion-processed Zn-Doped Nb2O5 as an electron transport layer for efficient and stable perovskite solar cells
Low-temperature solution-combustion-processed Zn-Doped Nb2O5 as an electron transport layer for efficient and stable perovskite solar cells
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低温溶液燃烧处理的掺锌 Nb2O5 作为高效稳定钙钛矿太阳能电池的电子传输层
DOI：
10.1016/j.jpowsour.2019.227419
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发表时间：
2020-02
影响因子：
9.2
通讯作者：
Lu Xing
中科院分区：
文献类型：
--
作者：
Ye Xiaoqin;Ling Hanbing;Zhang Rui;Wen Zhiyue;Hu Shuaifeng;Akasaka Takeshi;Xia Jiangbin;Lu Xing
铌氧化物（Nb 2 O 5）由于其优异的光学透射率和高载流子迁移率而被证明是钙钛矿太阳能电池（PSC）的理想电子传输层（ETL）材料。本文采用低温（200 °C）溶液燃烧法制备用作PSC中ETL的Nb 2 O 5膜。在优化条件下，PSC与Nb 2 O 5ETL获得的功率转换效率（PCE）为16.40%。此外，我们发现Zn掺杂的Nb 2 O 5可以进一步提高器件的效率。事实上，结果表明，对于具有5mol%Zn掺杂的Nb 2 O 5ETL的PSC，可以实现17.70%的冠军PCE。值得注意的是，掺杂Nb 2 O 5和Zn的Nb 2 O 5基器件都表现出明显优于传统高温烧结（~500 °C）的介孔TiO 2基器件的稳定性，在空气中储存20天后保持其初始PCE的80%。相比之下，在相同的储存条件下，具有TiO 2 ETL的装置的PCE在13天后迅速下降到其初始值的30%。因此，这项工作表明，使用低温溶液燃烧法制备的Zn掺杂的Nb 2 O 5 ETL是有希望实现高效和稳定的钙钛矿太阳能电池。
Niobium oxide (Nb2O5) has been demonstrated as an ideal electron transport layer (ETL) material for perovskite solar cells (PSCs) due to its excellent optical transmittance and high carrier mobility. Herein, a low-temperature (200 °C) solution-combustion method is adopted to prepare the Nb2O5film used as an ETL in PSCs. Under optimized conditions, PSC with the Nb2O5ETL obtains a power conversion efficiency (PCE) of 16.40%. Moreover, we find that Zn-doping of Nb2O5can further improve the efficiency of the device. As a matter of fact, the results show that a champion PCE of 17.70% can be achieved for the PSC with a 5 mol% Zn-doped Nb2O5ETL. Significantly, both Nb2O5- and Zn-doped Nb2O5-based devices exhibit obviously better stability than the traditional high-temperature-sintered (~500 °C) mesoporous TiO2-based devices, maintaining 80% of their initial PCE after storage in air for 20 days. In contrast, the PCE of the device with a TiO2ETL quickly drops to 30% of its initial value after 13 days under the same storage condition. Consequently, this work suggests that using Zn-doped Nb2O5ETL prepared by the low-temperature solution-combustion method is promising towards efficient and stable perovskite solar cells.
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影响因子：
1.6
作者：
Atsushi Kogo;Y. Numata;M. Ikegami;T. Miyasaka
通讯作者：
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影响因子：
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作者：
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