Quantum Dot-Sensitizers Prepared by SILAR and Cation-Exchange Processes

Journal of the Korean Chemical Society

article

So Min Yoo¹  Ji Young Oh²  Hyo Joong Lee³ 

[1] Department of Chemistry, Chonbuk National University;Center for University-wide Research Facilities, Chonbuk National University;Department of Bioactive Material Sciences, Chonbuk National University

关键词: Quantum dot;    Cation-exchange;    Sensitizer;    Solar cell;    SILAR;   

DOI  :  10.5012/jkcs.2018.62.5.341

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

Over the last two decades, there have been numerous efforts to prepare well-defined semiconducting nanocrystalline quantum dots (QDs) by the formation of colloidal nanoparticles in solution or by in-situ deposition of those over substrates.1,2 The as-prepared QDs have been utilized in many optoelectronic applications as well as in the investigation of fundamental photophysical properties depending on their different sizes in the realm of quantum confinement.3,4 Recently, QD sensitizer-based solar cells have attracted much attention due to its intrinsic advantages such as strong light-absorption, easy tuning of band gap, and etc.5 In particular, QDs could play a crucial role as a photo-sensitizer in the structure of dye-sensitized solar cells (DSSCs) instead of molecular dyes.6 Besides direct attachment of colloidal QDs,7,8 those QD sensitizers could be grown insitu on the surface of mesoporous metal oxide films by various chemical bath deposition (CBD) techniques.9−11 Among the many CBD processes, successive ionic layer adsorption and reaction (SILAR) is considered one of the most effective ways to control the deposition of QDs precisely by alternating dipping of the substrate into each precursor solution.

【 授权许可】

Unknown