Highly Emissive Green ZnSeTe Quantum Dots: Effects of Core Size on Their Optical Properties and Comparison with InP Counterparts
- Authors
- Yoon, S.-Y.; Han, J.-N.; Lee, Y.-J.; Channa, A.I.; Jo, D.-Y.; Kim, H.-M.; Kim, Y.; Park, S.M.; Park, S.; Kim, Y.-H.; Yang, H.
- Issue Date
- 10-Feb-2023
- Publisher
- American Chemical Society
- Citation
- ACS Energy Letters, v.8, no.2, pp.1131 - 1140
- Journal Title
- ACS Energy Letters
- Volume
- 8
- Number
- 2
- Start Page
- 1131
- End Page
- 1140
- URI
- https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/30836
- DOI
- 10.1021/acsenergylett.2c02924
- ISSN
- 2380-8195
- Abstract
- InP quantum dots (QDs) are the representative environmentally benign green and red emitters in color-by-blue display devices. However, particularly green InP QDs possess inferior blue absorption capability due to their intrinsically small core size. In this work, different-sized green-emissive ZnSeTe cores are synthesized while maintaining the same Se/Te ratio. Size-dependent molar absorption coefficients (ϵ450 nm) at 450 nm of a series of ZnSeTe cores are assessed, nearly scaling with the core volume, and further compared with that of a green InP counterpart. Subsequently, ZnSe/ZnSeS/ZnS triple shelling is implemented on different-sized ZnSeTe cores, yielding 509-530 nm in photoluminescence (PL) wavelength, 80-92% in PL quantum yield, and a similar volume scaling of ϵ450 nm. For a practical verification of color-by-blue performances, InP and ZnSeTe core/shell QDs in the form of a QD plate are combined with a blue LED, revealing that the latter QDs afford more efficient blue light absorption and color conversion than the former ones. © 2023 American Chemical Society.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - Graduate School > Materials Science and Engineering > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/30836)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.