Over the past decade, lead halide perovskites (LHPs), an emerging class of organic–inorganic ionic-type semiconductors, have drawn worldwide attention, which injects vitality into next-generation optoelectronics. Facilely tunable bandgap is one of the fascinating features of LHPs, enabling them to be widely used in various nano/microscale applications. Notably, wide-bandgap (WBG) LHPs have been considered as promising alternatives to traditional WBG semiconductors owing to the merits of low-cost, solution processability, superior optoelectronic characteristics, and flexibility, which could improve the cost-effectiveness and expand the application scenarios of traditional WBG devices. Herein, we provide a comprehensive review on the up-to-date research progress of WBG LHPs and their optoelectronics in terms of material fundamentals, optoelectronic devices, and their practical applications. First, the features and shortcomings of WBG LHPs are introduced to objectively display their natural features. Then we separately depict three typical optoelectronic devices based on WBG LHPs, including solar cells, light emitting diodes, and photodetectors. Sequentially, the inspiring applications of these optoelectronic devices in integrated functional systems are elaborately demonstrated. At last, the remaining challenges and future promise of WBG LHPs in optoelectronic applications are discussed. This review highlights the significance of WGB LHPs for promoting the development of the next-generation optoelectronics industry.

中文翻译：

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用于下一代光电子学的宽带隙卤化铅钙钛矿：现状和未来展望


在过去的十年中，卤化铅钙钛矿 （LHP） 是一类新兴的有机-无机离子型半导体，引起了全世界的关注，为下一代光电子学注入了活力。易于调谐的带隙是 LHP 的迷人特性之一，使其能够广泛用于各种纳米/微米级应用。值得注意的是，宽带隙 （WBG） LHP 因其低成本、解决方案可加工性、卓越的光电特性和灵活性等优点，被认为是传统 WBG 半导体的有前途的替代品，可以提高成本效益并扩大传统 WBG 器件的应用场景。本文从材料基础、光电子器件及其实际应用等方面对 WBG LHPs 及其光电子学的最新研究进展进行了全面的综述。首先，介绍了 WBG LHPs 的特点和缺点，客观地展示了其自然特征;然后，我们分别描述了三种基于 WBG LHP 的典型光电器件，包括太阳能电池、发光二极管和光电探测器。随后，详细展示了这些光电器件在集成功能系统中的鼓舞人心的应用。最后，讨论了 WBG LHP 在光电应用中仍然存在的挑战和未来前景。本文综述了 WGB LHP 对促进下一代光电子行业发展的重要性。