The Rise of Textured Perovskite Morphology: Revolutionizing the Pathway toward High‐Performance Optoelectronic Devices

• Published in: Advanced energy materials Vol. 10; no. 7
• Main Authors: Zhong, Jun‐Xing, Wu, Wu‐Qiang, Liao, Jin‐Feng, Feng, Wenhuai, Jiang, Yong, Wang, Lianzhou, Kuang, Dai‐Bin
• Format: Journal Article
• Language: English
• Published: Weinheim Wiley Subscription Services, Inc 01-02-2020
• Subjects: charge extraction; Electric properties; Energy harvesting; LEDs; light harvesting; Morphology; Optical properties; Optoelectronic devices; Organic light emitting diodes; Perovskites; Photovoltaic cells; Quantum efficiency; Solar cells; textured perovskites
• ISSN: 1614-6832; 1614-6840
• DOI: 10.1002/aenm.201902256

Halide perovskite materials have achieved overwhelming success in various optoelectronic applications, especially perovskite solar cells and perovskite‐based light‐emitting diodes (P‐LEDs), owing to their outstanding optical and electric properties. It is widely believed that flat and mirror‐like perovskite films are imperative for achieving high device performance, while the potential of other perovskite morphologies, such as the emerging textured perovskite, is overlooked, which leaves plenty of room for further breakthroughs. Compared to flat and mirror‐like perovskites, textured perovskites with unique structures, e.g., coral‐like, maze‐like, column‐like or quasi‐core@shell assemblies, are more efficient at light harvesting and charge extraction, thus revolutionizing the pathways toward ultrahigh performance in perovskite‐based optoelectronic devices. Employing a textured perovskite morphology, the record of external quantum efficiency for P‐LEDs is demonstrated as 21.6%. In this research news, recent progress in the utilization of textured perovskite is summarized, with the emphasis on the preparation strategies and prominent optoelectronic properties. The impact of the textured morphology on light harvesting, carrier dynamic management, and device performance is highlighted. Finally, the challenges and great potential of employing these innovative morphologies in fabricating more efficient optoelectronic devices, or creating a new energy harvesting and conversion regime are also provided.
This progress report provides a snapshot of the recent exciting progress in utilizing the emerging textured perovskite morphologies in perovskite‐based optoelectronic devices. The textured perovskite exhibits more efficient light harvesting and effective carrier dynamics management than the prototyped flat and dense counterpart, empowering ground‐breaking record device performance and diverse potential applications.