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首页> 外文期刊>Advanced Functional Materials >Enhanced Hole-Carrier Selectivity in Wide Bandgap Halide Perovskite Photovoltaic Devices for Indoor Internet of Things Applications
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Enhanced Hole-Carrier Selectivity in Wide Bandgap Halide Perovskite Photovoltaic Devices for Indoor Internet of Things Applications

机译：增强宽带隙卤化物钙钛矿光伏器件中的孔载波选择性，用于室内物联网应用

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摘要

Halide perovskite-based photovoltaic (PV) devices have recently emerged for low energy consumption electronic devices such as Internet of Things (IoT). In this work, an effective strategy to form a hole-selective layer using phenethylammonium iodide (PEAI) salt is presented that demonstrates unprecedently high open-circuit voltage of 0.9 V with 18 mu W cm(-2) under 200 lux (cool white light-emitting diodes). An appropriate post-deposited amount of PEAI (2 mg) strongly interacts with the perovskite surface forming a conformal coating of PEAI on the perovskite film surface, which improves the crystallinity and absorption of the film. Here, Kelvin probe force microscopy results indicate the diminished potential difference across the grain boundaries and grain interiors after the PEAI deposition, constructing an electrically and chemically homogeneous surface. Also, the surface becomes more p-type with a downshift of a valence band maximum, confirmed by ultraviolet photoelectron spectroscopy measurement, facilitating the transport of holes to the hole transport layer (HTL). The hole-selective layer-deposited devices exhibit reduced hysteresis in light current density-voltage curves and maintain steadily high fill factor across the different light intensities (200-1000 lux). This work highlights the importance of the HTL/perovskite interface that prepares the indoor halide perovskite PV devices for powering IoT device.
机译：最近出现了基于卤化物钙钛矿的光伏（PV）器件，用于低能量消耗电子设备，例如物联网（物联网）。在这项工作中，提出了一种使用苯乙基铵（Peai）盐形成孔选择层的有效策略，其展示了0.9V的难前的高开路电压为0.9V，在200勒克斯下（酷白光） - 分配二极管）。适当的沉积后的Peai（2mg）的药物（2mg）强烈地与钙钛矿表面形成在钙钛矿膜表面上形成Peai的保形涂层，这改善了膜的结晶度和吸收。这里，开尔文探针力学显微镜结果表明PeaI沉积后晶界和晶粒间片的差异减小，构建电气和化学均匀的表面。而且，表面变得更加p型，其值是由紫外线光电子谱测量的值证实的价带最大值，便于将空穴传输到空穴传输层（HT1）。孔选择层沉积的装置在光电流密度 - 电压曲线中表现出降低的滞后，并在不同光强度（200-1000勒克斯）上保持稳定的高填充因子。这项工作突出了HTL / PerovSkite接口的重要性，该接口为提供了IOT设备的室内卤化物PEROVSKITE PV设备。

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  • 来源
    《Advanced Functional Materials》 |2021年第16期|2008908.1-2008908.10|共10页
  • 作者

    Lee Minwoo; Choi Eunyoung; Soufiani Arman Mahboubi; Lim Jihoo; Kim Moonyong; Chen Daniel; Green Martin Andrew; Seidel Jan; Lim Sean; Kim Jincheol; Dai Xinchen; Lee-Chin Robert; Zheng Bolin; Hameiri Ziv; Park Jongsung; Hao Xiaojing; Yun Jae Sung;

  • 作者单位

    Univ New South Wales Australian Ctr Adv Photovolta ACAP Sch Photovolta & Renewable & Engn Sydney NSW 2052 Australia;

    Univ New South Wales Australian Ctr Adv Photovolta ACAP Sch Photovolta & Renewable & Engn Sydney NSW 2052 Australia;

    Univ New South Wales Australian Ctr Adv Photovolta ACAP Sch Photovolta & Renewable & Engn Sydney NSW 2052 Australia;

    Univ New South Wales Australian Ctr Adv Photovolta ACAP Sch Photovolta & Renewable & Engn Sydney NSW 2052 Australia;

    Univ New South Wales Australian Ctr Adv Photovolta ACAP Sch Photovolta & Renewable & Engn Sydney NSW 2052 Australia;

    Univ New South Wales Australian Ctr Adv Photovolta ACAP Sch Photovolta & Renewable & Engn Sydney NSW 2052 Australia;

    Univ New South Wales Australian Ctr Adv Photovolta ACAP Sch Photovolta & Renewable & Engn Sydney NSW 2052 Australia;

    Univ New South Wales Sch Mat Sci & Engn Sydney NSW 2052 Australia;

    Univ New South Wales Electron Microscope Unit Sydney NSW 2052 Australia;

    Korea Elect Technol Inst New & Renewable Res Ctr Gyeonggi Do 13509 Seongnam Si South Korea;

    Univ New South Wales Sch Mat Sci & Engn Sydney NSW 2052 Australia;

    Univ New South Wales Australian Ctr Adv Photovolta ACAP Sch Photovolta & Renewable & Engn Sydney NSW 2052 Australia;

    Univ New South Wales Australian Ctr Adv Photovolta ACAP Sch Photovolta & Renewable & Engn Sydney NSW 2052 Australia;

    Univ New South Wales Australian Ctr Adv Photovolta ACAP Sch Photovolta & Renewable & Engn Sydney NSW 2052 Australia;

    Green Energy Inst Solar Energy R&D Dept Mokpo 58656 Chonnam South Korea;

    Univ New South Wales Australian Ctr Adv Photovolta ACAP Sch Photovolta & Renewable & Engn Sydney NSW 2052 Australia;

    Univ New South Wales Australian Ctr Adv Photovolta ACAP Sch Photovolta & Renewable & Engn Sydney NSW 2052 Australia;

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  • 正文语种 eng
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  • 关键词

    halide perovskites; indoor photovoltaics; Kelvin probe force microscopy; solar cells;

    机译：卤化物蠕动;室内光伏;开尔文探头力显微镜;太阳能电池;

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