960化工网/ 文献/ 论文详情

Controllable Layer-By-Layer CdSe/ZnS Quantum-Dot Thin Films for Enhanced Performance of Light-Emitting Diodes and Photodetectors

MinGyeKim,Nam-KwangCho,JinHyunMa,MinHoPark,JeongHyeonPark,WoojinJeon,SeongJunKang
ACS Applied Nano Materials Pub Date : 07/19/2023 00:00:00 , DOI:10.1021/acsanm.3c02050
Abstract
We developed a promising deposition method for fabricating controllable layer-by-layer (LbL) quantum-dot (QD) structures. We introduced a spray coating method to induce desired properties of QD thin films as well as to control the thickness of QD layers. An intermediate heat treatment was applied between spray pass cycles to induce rapid evaporation of the surface ligands and solvent in the QD solution, which successfully prevents the formation of clusters on spray-coated QD (Sr-QD) films. Furthermore, we observed that the LbL structure of Sr-QDs has fewer surface defects and better crystallinity, leading to improved performance of optoelectronic devices compared to conventional solution-processed devices. Thus, our study suggests that this spray coating process enables detailed control of the properties and thickness of the QD films due to the highly controllable LbL structure of QD monolayers (MLs).
引用文献
推荐文献
微信二维码
  • 微信公众号二维码
  • 关注官方微信公众号
  • 微信二维码
  • 微信扫码联系客服
平台客服