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Multifunctional Optoelectronic Device Based on an Asymmetric Active Layer Structure

机译：基于非对称有源层结构的多功能光电器件

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摘要

A single device with a variety of capabilities is highly attractive for the increasing demands of complex and multifunctional optoelectronics. A hybrid heterojunction formed between CsPbBr3 halide perovskite and chalcogenide quantum dots is demonstrated. The heterojunction served as an asymmetric active layer allows not only charge separation/exciton dissociation in a benign process, but also carrier injection/recombination with the suppression of bulk and interfacial nonradiative recombination. An individual device incorporating such a heterojunction is therefore implemented with an integration of proof-of-concept functions, including a voltage controllable multicolor light-emitting diode, an exceptionally high photovoltage energy-harvesting device, and an ultrafast photosensitive detector. The figures of merit of the light-emitting diode remarkably surpass those of the corresponding singleactive-layer device, particularly in terms of its bright electroluminescence and superior long-term stability. The asymmetric active layer concept provides a feasible route to design efficient multifunctional and monofunctional devices in the future.
机译：具有多种功能的单个设备对于复杂和多功能光电子器件不断增长的需求非常有吸引力。证明了在CsPbBr3卤化物钙钛矿和硫族化物量子点之间形成的杂化异质结。用作非对称活性层的异质结不仅允许良性过程中的电荷分离/激子解离，而且允许载流子注入/重组，同时抑制了体相和界面非辐射重组。因此，结合了这种异质结的单个设备可以实现概念验证功能的集成，包括电压可​​控的多色发光二极管，异常高的光电压能量收集设备和超快光敏检测器。发光二极管的品质因数特别是在其明亮的电致发光和优异的长期稳定性方面明显超过相应的单活性层器件。非对称有源层概念为将来设计高效的多功能和单功能设备提供了一条可行的途径。

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  • 来源
    《Advanced Functional Materials》 |2019年第17期|1807894.1-1807894.9|共9页
  • 作者

    Ren Beitao; Yuen Gancheong; Deng Sunbin; Jiang Le; Zhou Dingjian; Gu Leilei; Xu Ping; Zhang Meng; Fan Zhiyong; Yueng Fion Sze Yan; Chen Rongsheng; Kwok Hoi-Sing; Li Gu Jun;

  • 作者单位

    Shenzhen Univ, Coll Elect Sci & Technol, Shenzhen 518060, Peoples R China;

    Shenzhen Univ, Coll Elect Sci & Technol, Shenzhen 518060, Peoples R China;

    Hong Kong Univ Sci & Technol, State Key Lab Adv Displays & Optoelect Technol, Kowloon, Clear Water Bay, Hong Kong, Peoples R China;

    Shenzhen Univ, Coll Elect Sci & Technol, Shenzhen 518060, Peoples R China;

    Shenzhen Univ, Coll Elect Sci & Technol, Shenzhen 518060, Peoples R China;

    Hong Kong Univ Sci & Technol, Dept Elect & Comp Engn, Kowloon, Clear Water Bay, Hong Kong, Peoples R China;

    Shenzhen Univ, Coll Elect Sci & Technol, Shenzhen 518060, Peoples R China;

    Shenzhen Univ, Coll Elect Sci & Technol, Shenzhen 518060, Peoples R China;

    Hong Kong Univ Sci & Technol, Dept Elect & Comp Engn, Kowloon, Clear Water Bay, Hong Kong, Peoples R China;

    Hong Kong Univ Sci & Technol, State Key Lab Adv Displays & Optoelect Technol, Kowloon, Clear Water Bay, Hong Kong, Peoples R China;

    South China Univ Technol, Sch Elect & Informat Engn, Guangzhou 510640, Guangdong, Peoples R China;

    Hong Kong Univ Sci & Technol, State Key Lab Adv Displays & Optoelect Technol, Kowloon, Clear Water Bay, Hong Kong, Peoples R China;

    Shenzhen Univ, Coll Elect Sci & Technol, Shenzhen 518060, Peoples R China;

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  • 正文语种 eng
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  • 关键词

    asymmetric active layer; heterojunction; multicolor electroluminescence; multifunctional optoelectronic device; perovskite;

    机译：不对称活性层;异质结;多色电致发光;多功能光电器件;钙钛矿;

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