journal article·2022-05-04

High-Efficiency Semitransparent Light-Emitting Diodes with Perovskite Nanocrystals

Qun Wan, Lu Huang, Long Kong, Qinggang Zhang, Congyang Zhang, Mingming Liu, Xinrong Liao, Wenji Zhan, Weilin Zheng, Changwei Yuan, Mengda He, Liang Li

ACS Applied Materials & Interfaces· Volume 14· Issue 17
Publisher page

Abstract

Artificial intelligence offers new opportunities for translucent displays. However, achieving translucent light-emitting diodes (LEDs) with high efficiency and high color purity remains a challenge. Here, we propose a strategy of using an alkali metal/inert metal (calcium/silver) bilayer metal electrode as a top electrode and perovskite nanocrystals as an emitter layer in the device structure, which allows us to not only fabricate excellent opaque LEDs but also manufacture highly efficient semitransparent LEDs with high color purity, total brightness (over 7000 cd m–2), total external quantum efficiency (over 12%), and 56% transmittance around 520 nm. This is the highest external quantum efficiency report about semitransparent LED based on perovskite materials or inorganic quantum dots so far, which presents great application potential in the field of translucent display with high color purity and wide color gamut.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Perovskite Materials and Applications · Quantum Dots Synthesis And Properties · Chalcogenide Semiconductor Thin Films

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China

School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China

Department of Electronic Engineering, School of Electronics Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China

Energy Materials and Surface Sciences Unit (EMSSU), Okinawa Institute of Science and Technology Graduate University (OIST), Onna-son, Kunigami-gun, Okinawa 904-0495, Japan

Shanghai Engineering Research Center of Solid Waste Treatment and Resource Recovery, Shanghai Jiao Tong University, Shanghai 200240, China

Funding

Ministry of Science and Technology of the People's Republic of China · China Postdoctoral Science Foundation · National Natural Science Foundation of China · Guangdong Province

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