Hu Hang, An Sophie X, Li Yang, Orooji Seyedamir, Singh Roja, Schackmar Fabian, Laufer Felix, Jin Qihao, Feeney Thomas, Diercks Alexander, Gota Fabrizio, Moghadamzadeh Somayeh, Pan Ting, Rienäcker Michael, Peibst Robby, Nejand Bahram Abdollahi, Paetzold Ulrich W
Institute of Microstructure Technology (IMT), Karlsruhe Institute of Technology (KIT) Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
Light Technology Institute (LTI), Karlsruhe Institute of Technology (KIT) Engesserstrasse 13 76131 Karlsruhe Germany.
Energy Environ Sci. 2024 Feb 13;17(8):2800-2814. doi: 10.1039/d3ee03687a. eCollection 2024 Apr 23.
The recent tremendous progress in monolithic perovskite-based double-junction solar cells is just the start of a new era of ultra-high-efficiency multi-junction photovoltaics. We report on triple-junction perovskite-perovskite-silicon solar cells with a record power conversion efficiency of 24.4%. Optimizing the light management of each perovskite sub-cell (∼1.84 and ∼1.52 eV for top and middle cells, respectively), we maximize the current generation up to 11.6 mA cm. Key to this achievement was our development of a high-performance middle perovskite sub-cell, employing a stable pure-α-phase high-quality formamidinium lead iodide perovskite thin film (free of wrinkles, cracks, and pinholes). This enables a high open-circuit voltage of 2.84 V in a triple junction. Non-encapsulated triple-junction devices retain up to 96.6% of their initial efficiency if stored in the dark at 85 °C for 1081 h.
基于单块钙钛矿的双结太阳能电池最近取得的巨大进展仅仅是超高效率多结光伏新时代的开端。我们报道了功率转换效率达到24.4%的创纪录的三结钙钛矿-钙钛矿-硅太阳能电池。通过优化每个钙钛矿子电池的光管理（顶部和中间子电池分别约为1.84 eV和1.52 eV），我们将电流产生最大化至11.6 mA/cm²。这一成就的关键在于我们开发了一种高性能的中间钙钛矿子电池，采用了稳定的纯α相高质量甲脒碘化铅钙钛矿薄膜（无褶皱、裂纹和针孔）。这使得三结中的开路电压高达2.84 V。如果在85°C黑暗环境中储存1081小时，未封装的三结器件可保留高达96.6%的初始效率。
