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Reconsidering figures of merit for performance and stability of perovskite photovoltaics†
Energy & Environmental Science ( IF 32.4 ) Pub Date : 2018-02-05 00:00:00 , DOI: 10.1039/c7ee02956j Mark V. Khenkin 1, 2, 3, 4, 5 , Anoop K. M. 1, 2, 3, 4, 5 , Iris Visoly-Fisher 1, 2, 3, 4, 5 , Yulia Galagan 6, 7, 8 , Francesco Di Giacomo 6, 7, 8 , Bhushan Ramesh Patil 9, 10, 11, 12, 13 , Golnaz Sherafatipour 9, 10, 11, 12, 13 , Vida Turkovic 9, 10, 11, 12, 13 , Horst-Günter Rubahn 9, 10, 11, 12, 13 , Morten Madsen 9, 10, 11, 12, 13 , Tamara Merckx 14, 15, 16, 17 , Griet Uytterhoeven 14, 15, 16, 17 , João P. A. Bastos 14, 15, 16, 17, 18 , Tom Aernouts 14, 15, 16, 17 , Francesca Brunetti 19, 20, 21, 22, 23 , Monica Lira-Cantu 24, 25, 26, 27 , Eugene A. Katz 1, 2, 3, 4, 5
Energy & Environmental Science ( IF 32.4 ) Pub Date : 2018-02-05 00:00:00 , DOI: 10.1039/c7ee02956j Mark V. Khenkin 1, 2, 3, 4, 5 , Anoop K. M. 1, 2, 3, 4, 5 , Iris Visoly-Fisher 1, 2, 3, 4, 5 , Yulia Galagan 6, 7, 8 , Francesco Di Giacomo 6, 7, 8 , Bhushan Ramesh Patil 9, 10, 11, 12, 13 , Golnaz Sherafatipour 9, 10, 11, 12, 13 , Vida Turkovic 9, 10, 11, 12, 13 , Horst-Günter Rubahn 9, 10, 11, 12, 13 , Morten Madsen 9, 10, 11, 12, 13 , Tamara Merckx 14, 15, 16, 17 , Griet Uytterhoeven 14, 15, 16, 17 , João P. A. Bastos 14, 15, 16, 17, 18 , Tom Aernouts 14, 15, 16, 17 , Francesca Brunetti 19, 20, 21, 22, 23 , Monica Lira-Cantu 24, 25, 26, 27 , Eugene A. Katz 1, 2, 3, 4, 5
Affiliation
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The development of hybrid organic–inorganic halide perovskite solar cells (PSCs) that combine high performance and operational stability is vital for implementing this technology. Recently, reversible improvement and degradation of PSC efficiency have been reported under illumination–darkness cycling. Quantifying the performance and stability of cells exhibiting significant diurnal performance variations is challenging. We report the outdoor stability measurements of two types of devices showing either reversible photo-degradation or reversible efficiency improvement under sunlight. Instead of the initial (or stabilized) efficiency and T80 as the figures of merit for the performance and stability of such devices, we propose using the value of the energy output generated during the first day of exposure and the time needed to reach its 20% drop, respectively. The latter accounts for both the long-term irreversible degradation and the reversible diurnal efficiency variation and does not depend on the type of process prevailing in a given perovskite cell.
中文翻译：
重新考虑钙钛矿光伏电池性能和稳定性的优劣指标†
结合高性能和操作稳定性的有机-无机卤化物钙钛矿混合太阳能电池（PSC）的开发对于实施该技术至关重要。最近，据报道在光照-黑暗循环下可逆的PSC效率提高和降低。量化表现出明显的昼夜性能变化的细胞的性能和稳定性是具有挑战性的。我们报告了两种类型的设备的户外稳定性测量结果，它们在阳光下显示出可逆的光降解或可逆的效率提高。而不是初始（或稳定）的效率和T 80作为此类设备的性能和稳定性的品质因数，我们建议分别使用暴露第一天产生的能量输出值和达到其下降20％所需的时间。后者说明了长期不可逆降解和可逆日效率变化，并且不取决于给定钙钛矿电池中普遍存在的过程类型。
更新日期：2018-02-05
中文翻译：
重新考虑钙钛矿光伏电池性能和稳定性的优劣指标†
结合高性能和操作稳定性的有机-无机卤化物钙钛矿混合太阳能电池（PSC）的开发对于实施该技术至关重要。最近，据报道在光照-黑暗循环下可逆的PSC效率提高和降低。量化表现出明显的昼夜性能变化的细胞的性能和稳定性是具有挑战性的。我们报告了两种类型的设备的户外稳定性测量结果，它们在阳光下显示出可逆的光降解或可逆的效率提高。而不是初始（或稳定）的效率和T 80作为此类设备的性能和稳定性的品质因数，我们建议分别使用暴露第一天产生的能量输出值和达到其下降20％所需的时间。后者说明了长期不可逆降解和可逆日效率变化，并且不取决于给定钙钛矿电池中普遍存在的过程类型。
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