Publications by authors named "Yun Hoo Kim"
Colloidal quantum dots (CQDs) are promising for infrared photodetectors with high detectivity and low-cost production. Although CQDs enable photoinduced charge multiplication, thermal noise in low-bandgap materials limits their performance in IR detectors. Here we present a pioneering architecture of a CQD-based infrared photodetector that uses kinetically pumped avalanche multiplication.
View Article and Find Full Text PDFArticle Synopsis
- - Silver bismuth disulfide (AgBiS) colloidal nanocrystals (CNCs) are eco-friendly materials with great photoconductivity, and when used in solar cells, they meet RoHS guidelines for hazardous substances.
- - To enhance their performance, a new diketopyrrolopyrrole (DPP)-based polymer called BD2FCT is introduced as a hole transport layer, optimizing charge transfer and reducing recombination at the interfaces of the CNCs.
- - The collaboration of BD2FCT with a low-bandgap acceptor, IEICO-4F, leads to more efficient hole transfer and improved overall solar cell performance, achieving a 10.1% power conversion efficiency.