Статья

Refining Perovskite Heterojunctions for Effective Light‐Emitting Solar Cells

Peng ChenState Key Laboratory for Artificial Microstructure and Mesoscopic Physics School of Physics Frontiers Science Center for Nano‐optoelectronics & Collaborative Innovation Center of Quantum Matter Peking University Beijing 100871 ChinaJuntao HuCenter of Development and Research Yunnan Tin Group (Holding) Co. Ltd Kunming 650106 P. R. ChinaMaotao YuState Key Laboratory for Artificial Microstructure and Mesoscopic Physics School of Physics Frontiers Science Center for Nano‐optoelectronics & Collaborative Innovation Center of Quantum Matter Peking University Beijing 100871 ChinaPeicheng LiDepartment of Materials Science and Engineering University of Toronto Toronto Ontario M5G 3E4 CanadaRui SuState Key Laboratory for Artificial Microstructure and Mesoscopic Physics School of Physics Frontiers Science Center for Nano‐optoelectronics & Collaborative Innovation Center of Quantum Matter Peking University Beijing 100871 ChinaZaiwei WangDepartment of Electrical and Computer Engineering University of Toronto Toronto Ontario M5S 1A4 CanadaLichen ZhaoState Key Laboratory for Artificial Microstructure and Mesoscopic Physics School of Physics Frontiers Science Center for Nano‐optoelectronics & Collaborative Innovation Center of Quantum Matter Peking University Beijing 100871 ChinaShunde LiState Key Laboratory for Artificial Microstructure and Mesoscopic Physics School of Physics Frontiers Science Center for Nano‐optoelectronics & Collaborative Innovation Center of Quantum Matter Peking University Beijing 100871 ChinaYingguo YangShanghai Synchrotron Radiation Facility (SSRF) Zhangjiang Lab Shanghai Advanced Research Institute Chinese Academy of Sciences Shanghai 201204 ChinaYuzhuo ZhangState Key Laboratory for Artificial Microstructure and Mesoscopic Physics School of Physics Frontiers Science Center for Nano‐optoelectronics & Collaborative Innovation Center of Quantum Matter Peking University Beijing 100871 ChinaQiuyang LiState Key Laboratory for Artificial Microstructure and Mesoscopic Physics School of Physics Frontiers Science Center for Nano‐optoelectronics & Collaborative Innovation Center of Quantum Matter Peking University Beijing 100871 ChinaDeying LuoDepartment of Materials Science and Engineering University of Toronto Toronto Ontario M5G 3E4 CanadaQihuang GongCollaborative Innovation Center of Extreme Optics Shanxi University Taiyuan Shanxi 030006 ChinaEdward H. SargentDepartment of Electrical and Computer Engineering University of Toronto Toronto Ontario M5S 1A4 CanadaRui ZhuCollaborative Innovation Center of Extreme Optics Shanxi University Taiyuan Shanxi 030006 ChinaZheng‐Hong LuDepartment of Materials Science and Engineering University of Toronto Toronto Ontario M5G 3E4 Canada

2022en

ABI

Аннотация

Abstract Solar cells capable of light‐harvesting during daytime and light‐emission at night are multifunctional semiconductor devices with many potential applications. Here, it is reported that halide perovskite heterojunction interfaces can be refined to yield stable and efficient solar cells. The cell can also operate effectively as an ultralow‐voltage light‐emitting diode (LED) with a peak external quantum efficiency of electroluminescence (EQE EL ) of 3.3%. Spectroscopic and microscopic studies reveal that double‐heterojunction refinement with wide‐bandgap salts is key to densifying the packing of perovskite grains and enlarging the bandgaps of the perovskite surfaces that are in contact with charge‐transport semiconductors. The refined perovskite enables a simple device with dual actions of solar cells and LEDs. This type of all‐in‐one device has the potential to be used in multifunctional harvesting–storage–utilization (HSU) systems.

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Идентификаторы

DOI: 10.1002/adma.202208178

Цитирования и источники

Цитирований: 2Использованных источников: 0

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