Perovskite quantum dots for light-emitting devices. Issue 41 (26th September 2019)

• Record Type: Journal Article
• Authors: Li, Yun-Fei; Feng, Jing; Sun, Hong-Bo
• Is Part Of: Nanoscale. Volume 11:Issue 41(2019)
• Page Start: 19119
• Page End: 19139
• Publication Date: 2019-09-26
• Subjects: Nanoscience -- Periodicals; Nanotechnology -- Periodicals; 620.505
• DOI: 10.1039/c9nr06191f
• Languages: English
• ISSNs: 2040-3364

Abstract

Abstract : Perovskite QDs are promising platforms for light-emitting applications. Advances in perovskite QDs, including optoelectronic properties and device performance are discussed. Abstract : Perovskite quantum dots (QDs) have been hotly pursued in recent decades owing to their quantum confinement effect and defect-tolerant nature. Their unique optical properties, such as high photoluminescence quantum yield (PLQY) approaching unity, narrow emission bandwidth, tunable wavelength spanning the entire visible spectrum, and compatibility with flexible/stretchable electronics, render perovskite QDs promising for next-generation solid lighting sources and information displays. Herein, the advances in perovskite QDs and their applications in LEDs are reviewed. Strategies to fabricate efficient perovskite QDs and device configuration, including material composition design, synthetic methods, surface engineering, and device optimization, are investigated and highlighted. Moreover, the main challenges in perovskite QDs of instability and toxicity (lead-based) are identified, while the solutions undertaken with respect to composition engineering, device encapsulation, and lead-replacement QDs are demonstrated. Meanwhile, perspectives for the further development of perovskite QDs and corresponding LEDs are presented.