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Thin semiconducting layers as active and passive emitters for thermophotonics and thermophotovoltaics

Date

2004

Authors

Catchpole, Kylie
Lin, K.L.
Green, Martin Andrew
Aberle, A.G.
Corkish, R P
Zhao, J
Wang, A

Journal Title

Journal ISSN

Volume Title

Publisher

Pergamon-Elsevier Ltd

Abstract

Thermophotovoltaics involves the photovoltaic conversion by a receiver cell of radiation from an emitter, which could be heated by various sources including sunlight. A prime difference from normal solar photovoltaics is that emitted energy unable to be used by the receiver can, in principle, be recycled allowing high conversion efficiency. Thermophotonics is a recent development of this concept where the emitter is "active", namely a heated diode, increasing the rate of energy transfer for a given emitter temperature and concentrating emission in an energy range more suited for conversion by the receiver. This paper evaluates thin semiconducting layers as emitters for thermophotovoltaics and thermophotonics. It is shown that thermophotonics avoids a major challenge for thermophotovoltaics: the sensitive dependence of system efficiency on the recycling of below bandgap radiation. Possible ways of achieving the high external quantum efficiency light-emitting diode required for thermophotonics are discussed.

Description

Keywords

Keywords: Energy conversion; Energy efficiency; Energy transfer; Light emitting diodes; Photovoltaic effects; Semiconductor materials; Thermal effects; Thermophototonics; Solar energy; photovoltaic system

Citation

Source

Solar Energy

Type

Journal article

Book Title

Entity type

Access Statement

License Rights

DOI

10.1016/j.solener.2003.09.008

Restricted until

2037-12-31