Công bố khoa học

Authors: Amirhossein Hasani, Quyet Van Le, Mahider Tekalgne, Wenwu Guo, Sung Hyun Hong, Kyoung Soon Choi, Tae Hyung Lee, Ho Won Jang, Soo Young Kim

Description: Nanocrystal quantum dots (QDs) provide tunable optoelectronic properties on the basis of their dimension. CdSe QDs, which are size-dependent colloidal nanocrystals, are used for efficient electrochromic devices owing to their unique properties in modulating quantum confinement, resulting in enhanced electron insertion during the electrochromic process. Incorporating a well-known metal oxide electrochromic material such as WO₃into CdSe QDs enhances the redox process. Herein, we propose a facile method for producing and optimizing CdSe QDs doped in WO₃. The fabrication of the electrochromic film involves a solution and annealing process. Moreover, the effect of the QD size to optimize the electrochromic layer is studied. As a result, the coloration efficiency of WO₃ and optimized CdSe QD–WO₃ are obtained as 68.6 and 112.3 cm²/C, respectively. Thus, size-tunable nanocrystal QDs combined with a …