Delocalized quantum states enhance photocell efficiency. Issue 8 (27th January 2015)

• Record Type: Journal Article
• Authors: Zhang, Yiteng; Oh, Sangchul; Alharbi, Fahhad H.; Engel, Gregory S.; Kais, Sabre
• Is Part Of: Physical chemistry chemical physics. Volume 17:Issue 8(2015)
• Page Start: 5743
• Page End: 5750
• Publication Date: 2015-01-27
• Subjects: Chemistry, Physical and theoretical -- Periodicals; 541.3
• DOI: 10.1039/c4cp05310a
• Languages: English
• ISSNs: 1463-9076

Abstract

Abstract : The high quantum efficiency of photosynthetic complexes has inspired researchers to explore new routes to utilize this process for photovoltaic devices. Abstract : The high quantum efficiency of photosynthetic complexes has inspired researchers to explore new routes to utilize this process for photovoltaic devices. Quantum coherence has been demonstrated to play a crucial role in this process. Herein, we propose a three-dipole system as a model of a new photocell type which exploits the coherence among its three dipoles. We have proved that the efficiency of such a photocell is greatly enhanced by quantum coherence. We have also predicted that the photocurrents can be enhanced by about 49.5% in such a coherent coupled dipole system compared with the uncoupled dipoles. These results suggest a promising novel design aspect of photosynthesis-mimicking photovoltaic devices.