材料科学与纳米材料学报

抽象的

Streamlining Charge Transporter Twisting and Ultrafast Charge Extraction in CsPbI3 Perovskite Qds by Utilizing a Nanocrystals Substitute

Tun Seng Herng

CsPbI3 quantum dots (QDs) are of extraordinary interest in new-age photovoltaic (PVs) due to their superb optoelectronic properties. The long and insulative ligands safeguard their stage dependability and empower unrivaled photoluminescence quantum yield, in any case, restricting charge transportation and extraction in PV gadgets. In this work, we utilize a fullerene subordinate with the carboxylic anchor bunch ([SAM] C60) as the semiconductor ligand and construct the sort II heterojunction arrangement of CsPbI3 QDs and [SAM] C60 particles. We find their mix empowers clear exciton separation and profoundly productive photogenerated charge extraction. After the presentation of [SAM] C60, the exciton-restricting energy of CsPbI3 diminishes from 30 meV to 7 meV and the fluorescence outflow system likewise shows clear changes. Transient retention spectroscopy envisions a ~5 ps electron extraction rate in this framework. The discoveries acquired here might direct the improvement of perovskite QD gadgets.