The investigation of TCO/CdS/CdTe heterojunctions by C-U and C-f measurements: Experiment and modeling

Author

Rotaru, Constantin ; Vatavu, S. ; Fedorov, Vladimir ; Gasin, Petru ; Lux-Steiner, Martha ; Ferekides, C. ; Rusu, Mirabela

Author_Institution

Fac. of Phys. & Eng., Moldova State Univ., Chisinau, Moldova

fYear

2013

fDate

16-21 June 2013

Firstpage

2034

Lastpage

2038

Abstract

The paper presents the analysis of C-U and C-f data obtained in the 1 kHz-10 MHz range for CdS/CdTe heterojunctions prepared by CSS onto (ZnO:Al, ZnO:Al/i-ZnO)/Glass substrates. An attempt to model the physical properties of the heterojunctions is made. A small signal analysis has been carried out to establish the equivalent circuit of device. The unusual capacitance behavior of the ZnO based heterojunction is attributed to presence of the barrier at the back contact.

Keywords

II-VI semiconductors; cadmium compounds; equivalent circuits; semiconductor device models; solar cells; zinc compounds; C-f measurements; CdS-CdTe; ZnO:Al; back contact; capacitance-voltage characteristics; equivalent circuit; glass substrates; heterojunction model; small signal analysis; transparent conductive oxide; Capacitance; Equivalent circuits; Heterojunctions; Nickel; Photovoltaic cells; Physics; Zinc oxide; cadmium compounds; capacitance; capacitance-voltage characteristics; heterojunction; photovoltaic cells; semiconductor device modeling;

fLanguage

English

Publisher

ieee

Conference_Titel

Photovoltaic Specialists Conference (PVSC), 2013 IEEE 39th

Conference_Location

Tampa, FL

Type

conf

DOI

10.1109/PVSC.2013.6744872

Filename

6744872