Enhancing blue photoresponse in CdTe photovoltaics by luminescent down-shifting using semiconductor quantum dot/PMMA films

Hodgson, Simon, Brooks, William, Clayton, Andrew, Kartopu, Giray, Barrioz, Vincent and Irvine, Stuart (2013) Enhancing blue photoresponse in CdTe photovoltaics by luminescent down-shifting using semiconductor quantum dot/PMMA films. Nano Energy, 2 (1). pp. 21-27. ISSN 2211 2855

Full text not available from this repository. (Request a copy)

Abstract

Commercially available semiconductor quantum dots have been encapsulated within a poly(methyl, methacrylate) polymer matrix to form a luminescent down-shifting layer. The films were deposited, via doctor blading on thin film CdTe structures. This paper demonstrates an average increase of 16% in the conversion of photons with energies greater than the window layer band gap (>2.7 eV), which would normally not produce photocurrent due to the filtering effect of the window layer. The films have been characterised using surface mapping laser beam induced current measurements (LBIC) and external quantum efficiency (EQE). While these initial results show an overall decrease in the current output from the device, the possible loss mechanisms are explored and discussed.

Item Type:	Article
Uncontrolled Keywords:	LBIC; Photovoltaics; Quantum dot; Fluorescence; Luminescent down-shifting; CdTe
Subjects:	F200 Materials Science
Department:	Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User:	Becky Skoyles
Date Deposited:	23 Nov 2015 15:23
Last Modified:	12 Oct 2019 19:08
URI:	http://nrl.northumbria.ac.uk/id/eprint/24691

Downloads