Light-Emitting Transistors with High Color Purity Using Perovskite Quantum Dot Emitters
- Authors
- Park, Yu Jung; Kim, Minseong; Song, Aeran; Kim, Jin Young; Chung, Kwun-Bum; Walker, Bright; Seo, Jung Hwa; Wang, Dong Hwan
- Issue Date
- 5-Aug-2020
- Publisher
- AMER CHEMICAL SOC
- Keywords
- organic-inorganic halide perovskite; quantum dot; super yellow; light-emitting transistors; zinc-oxynitride
- Citation
- ACS APPLIED MATERIALS & INTERFACES, v.12, no.31, pp 35175 - 35180
- Pages
- 6
- Journal Title
- ACS APPLIED MATERIALS & INTERFACES
- Volume
- 12
- Number
- 31
- Start Page
- 35175
- End Page
- 35180
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/43469
- DOI
- 10.1021/acsami.0c05537
- ISSN
- 1944-8244
1944-8252
- Abstract
- The class of organic-inorganic lead halides with perovskite crystal structures has recently emerged as promising materials for a variety of practical optoelectronic applications. In particular, hybrid halide perovskite quantum dots possess excellent intrinsic optoelectronic properties such as high color purity (full width at half-maximum of 24.59 nm) and photoluminescence quantum yields (92.7%). In this work, we demonstrate the use of perovskite quantum dot materials as an emissive layer of hybrid light-emitting transistors. To investigate the working mechanism of perovskite quantum dots in light-emitting transistors, we investigated the electrical and optical characteristics under both p-channel and n-channel operation. Using these materials, we have achieved perovskite quantum dot light-emitting transistors with high electron mobilities of up to 12.06 cm(2).V-1 s(-1), high brightness of up to 1.41 x 10(4) cd m(-2), and enhanced external quantum efficiencies of up to 1.79% operating at a source-drain potential of 40 V.
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