Optical analysis of CH(3)NH(3)Sn (x) Pb(1-x) I(3) absorbers: a roadmap for perovskite-on-perovskite tandem solar cells.
Optical analysis of CH(3)NH(3)Sn (x) Pb(1-x) I(3) absorbers: a roadmap for perovskite-on-perovskite tandem solar cells.
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DOI：
10.1039/c6ta04840d
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发表时间：
2016-08-07
期刊：
影响因子：
--
通讯作者：
Míguez H
中科院分区：
文献类型：
--
作者：
Anaya M;Correa-Baena JP;Lozano G;Saliba M;Anguita P;Roose B;Abate A;Steiner U;Grätzel M;Calvo ME;Hagfeldt A;Míguez H
我们提出了一种新的串联结构设计，其中顶部和底部电池都含有钙钛矿吸收剂。以锡取代铅的有机-无机钙钛矿结构是宽带光吸收的特殊候选者。在此，我们对CH3NH3SnxPb1-xI3薄膜的光学性质进行了全面的分析，为该领域提供了有关这些材料用于高效钙钛矿太阳能电池的可能性的明确见解。我们报告了一份用户指南，该指南基于对一系列锡/铅钙钛矿薄膜获得的第一组光学常数，由于制备了光学质量薄层，因此只有可能测量这些常数。根据Shockley-Queisser理论，CH3NH3SnxPb1-xI3化合物有望大幅提高单结太阳能电池的短路光电流和功率转换效率。此外，我们提出了一种新的串联结构设计，其中顶部和底部电池都由钙钛矿吸收剂制成。我们的计算表明，这种钙钛矿-钙钛矿串联装置的效率可以达到35%以上。我们的分析有助于建立基于实际光学表征数据的这类细胞的第一个路线图。我们预计，这项研究将鼓励新型近红外钙钛矿材料的研究，用于光伏应用，这可能会对快速兴起的串联器件领域产生影响。
We propose a novel tandem architecture design in which both top and bottom cells contain perovskite absorbers. Organic–inorganic perovskite structures in which lead is substituted by tin are exceptional candidates for broadband light absorption. Herein we present a thorough analysis of the optical properties of CH3NH3SnxPb1–xI3 films, providing the field with definitive insights about the possibilities of these materials for perovskite solar cells of superior efficiency. We report a user's guide based on the first set of optical constants obtained for a series of tin/lead perovskite films, which was only possible to measure due to the preparation of optical quality thin layers. According to the Shockley–Queisser theory, CH3NH3SnxPb1–xI3 compounds promise a substantial enhancement of both short circuit photocurrent and power conversion efficiency in single junction solar cells. Moreover, we propose a novel tandem architecture design in which both top and bottom cells are made of perovskite absorbers. Our calculations indicate that such perovskite-on-perovskite tandem devices could reach efficiencies over 35%. Our analysis serves to establish the first roadmap for this type of cells based on actual optical characterization data. We foresee that this study will encourage the research on novel near-infrared perovskite materials for photovoltaic applications, which may have implications in the rapidly emerging field of tandem devices.
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影响因子：
56.9
作者：
Lee, Michael M.;Teuscher, Joel;Snaith, Henry J.
通讯作者：
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影响因子：
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作者：
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作者：
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5.7
作者：
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通讯作者：
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影响因子：
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作者：
HIRASAWA, M;ISHIHARA, T;MIURA, N
通讯作者：
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