Correlation of Electroluminescence With Open-Circuit Voltage From Thin-Film CdTe Solar Cells

Author

Raguse, John M. ; Sites, James R.

Author_Institution

Phys. Dept., Colorado State Univ., Fort Collins, CO, USA

Volume

5

Issue

4

fYear

2015

fDate

Jul-15

Firstpage

1175

Lastpage

1178

Abstract

Electroluminescence (EL) measurements of several CdTe solar cells, a GaAs solar cell, and an AlGaAs LED were performed. The mean integrated EL intensity, normalized to exposure time and injection-current density, correlates well with the difference between ideal open-circuit voltage and measured open-circuit voltage, nearly independently of cell details or uniformity. This trend holds for devices of different absorber materials but does not hold for devices which exhibit poor superposition between light and dark current-voltage (J-V) curves.

Keywords

II-VI semiconductors; III-V semiconductors; aluminium compounds; cadmium compounds; current density; electroluminescence; gallium arsenide; solar cells; AlGaAs; CdTe; GaAs; LED; dark current-voltage curves; electroluminescence; exposure time; injection-current density; light curves; mean integrated EL intensity; open-circuit voltage; thin-film solar cells; Current measurement; Gallium arsenide; Light emitting diodes; Photovoltaic cells; Photovoltaic systems; Voltage measurement; Cadmium compounds; electroluminescence (EL); external quantum efficiency; open-circuit voltage; photovoltaic cells;

fLanguage

English

Journal_Title

Photovoltaics, IEEE Journal of

Publisher

ieee

ISSN

2156-3381

Type

jour

DOI

10.1109/JPHOTOV.2015.2417761

Filename

7086293