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Performance of WO3-Incorporated Carbon Electrodes for Ambient Mesoscopic Perovskite Solar Cells.
ACS Omega ( IF 3.7 ) Pub Date : 2019-12-30 , DOI: 10.1021/acsomega.9b02934 Shubhranshu Bhandari 1 , Anurag Roy 1 , Aritra Ghosh 1 , Tapas Kumar Mallick 1 , Senthilarasu Sundaram 1
ACS Omega ( IF 3.7 ) Pub Date : 2019-12-30 , DOI: 10.1021/acsomega.9b02934 Shubhranshu Bhandari 1 , Anurag Roy 1 , Aritra Ghosh 1 , Tapas Kumar Mallick 1 , Senthilarasu Sundaram 1
Affiliation
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The stability of perovskite solar cells (PSC) is often compromised by the organic hole transport materials (HTMs). We report here the effect of WO3 as an inorganic HTM for carbon electrodes for improved stability in PSCs, which are made under ambient conditions. Sequential fabrication of the PSC was performed under ambient conditions with mesoporous TiO2/Al2O3/CH3NH3PbI3 layers, and, on the top of these layers, the WO3 nanoparticle-embedded carbon electrode was used. Different concentrations of WO3 nanoparticles as HTM incorporated in carbon counter electrodes were tested, which varied the stability of the cell under ambient conditions. The addition of 7.5% WO3 (by volume) led to a maximum power conversion efficiency of 10.5%, whereas the stability of the cells under ambient condition was ∼350 h, maintaining ∼80% of the initial efficiency under light illumination. At the same time, the higher WO3 concentration exhibited an efficiency of 9.5%, which was stable up to ∼500 h with a loss of only ∼15% of the initial efficiency under normal atmospheric conditions and light illumination. This work demonstrates an effective way to improve the stability of carbon-based perovskite solar cells without affecting the efficiency for future applications.
中文翻译：
用于环境介观钙钛矿太阳能电池的掺有WO3的碳电极的性能。
钙钛矿太阳能电池（PSC）的稳定性通常会受到有机空穴传输材料（HTM）的影响。我们在这里报告WO3作为无机HTM用于碳电极的效果，以改善在环境条件下制备的PSC中的稳定性。在环境条件下，用介孔TiO2 / Al2O3 / CH3NH3PbI3层进行PSC的顺序制造，并在这些层的顶部使用WO3纳米粒子嵌入碳电极。测试了将不同浓度的WO3纳米颗粒作为HTM掺入碳反电极中的情况，这些改变了电池在环境条件下的稳定性。加入7.5％WO3（按体积计）导致最大功率转换效率为10.5％，而电池在环境条件下的稳定性约为350小时，在光照下保持约80％的初始效率。同时，较高的WO3浓度显示出9.5％的效率，在约500小时内稳定，在正常大气条件和光照下损失的效率仅为初始效率的约15％。这项工作演示了一种有效的方法，可以提高碳基钙钛矿太阳能电池的稳定性，而不会影响未来应用的效率。
更新日期：2020-01-14
中文翻译：
用于环境介观钙钛矿太阳能电池的掺有WO3的碳电极的性能。
钙钛矿太阳能电池（PSC）的稳定性通常会受到有机空穴传输材料（HTM）的影响。我们在这里报告WO3作为无机HTM用于碳电极的效果，以改善在环境条件下制备的PSC中的稳定性。在环境条件下，用介孔TiO2 / Al2O3 / CH3NH3PbI3层进行PSC的顺序制造，并在这些层的顶部使用WO3纳米粒子嵌入碳电极。测试了将不同浓度的WO3纳米颗粒作为HTM掺入碳反电极中的情况，这些改变了电池在环境条件下的稳定性。加入7.5％WO3（按体积计）导致最大功率转换效率为10.5％，而电池在环境条件下的稳定性约为350小时，在光照下保持约80％的初始效率。同时，较高的WO3浓度显示出9.5％的效率，在约500小时内稳定，在正常大气条件和光照下损失的效率仅为初始效率的约15％。这项工作演示了一种有效的方法，可以提高碳基钙钛矿太阳能电池的稳定性，而不会影响未来应用的效率。
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