Multiple exciton generation in quantum dot-based solar cells

Nanophotonics

article

Heather Goodwin¹  Tom C. Jellicoe¹  Nathaniel J.L.K. Davis¹  Marcus L. Böhm¹ 

[1] Cavendish Laboratory, University of Cambridge;Part of Blacktrace Holdings Ltd., Unit 3

关键词: multiple exciton generation;    quantum dots;    solar cells;   

DOI  :  10.1515/nanoph-2017-0034

学科分类：社会科学、人文和艺术（综合）

来源: De Gruyter

【 摘 要 】

Multiple exciton generation (MEG) in quantum-confined semiconductors is the process by which multiple bound charge-carrier pairs are generated after absorption of a single high-energy photon. Such charge-carrier multiplication effects have been highlighted as particularly beneficial for solar cells where they have the potential to increase the photocurrent significantly. Indeed, recent research efforts have proved that more than one charge-carrier pair per incident solar photon can be extracted in photovoltaic devices incorporating quantum-confined semiconductors. While these proof-of-concept applications underline the potential of MEG in solar cells, the impact of the carrier multiplication effect on the device performance remains rather low. This review covers recent advancements in the understanding and application of MEG as a photocurrent-enhancing mechanism in quantum dot-based photovoltaics.

【 授权许可】

CC BY