Hot Charge Carrier Extraction from Semiconductor Quantum Dots

Abstract

This article focus on the recent work carried out on hot charge carrier extraction from colloidal quantum dots (QDs). It has been contemplated that the quantum dot based solar cell (QDSC) can reach exceptionally high efficiencies if hot charge carriers can be extracted. However, the process requires excellent charge carrier separation from energetically hot states as compared to relaxation within QDs energy levels. Also, most of the studies were being carried out on thermal charge carrier extraction from QDs and very limited information was available on hot charge carrier extraction. In this Feature Article, we have discussed the work carried out on hot charge carrier extraction from QDs and the challenges involved in the process.