Journal Article Research Support, Non-U.S. Gov't colloidal quantum dots solar cells doping passivation HgTe colloidal quantum dots In-doped ZnO PbS quantum dots Se‐stabilization TFT imager charge extraction depleted heterojunction direct optical patterning electronic polymers hole transport layers hysteresis infrared photodetectors inorganic nanomaterials molecular iodine perovskites photochemistry photodiodes photovoltaics planar cation passivation quantum dot electroluminescence quantum-dot ligand exchange surface ligands