| |
 |
UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-23 18:31 |
 |
|
|
|
Conference: Bucharest University Faculty of Physics 2014 Meeting
Section: Solid State Physics and Materials Science
Title:
The influence of different TCO’s on the spectral response of photovoltaic cells based on CdTe
Authors:
Raluca CONSTANTINEANU, Sorina IFTIMIE, A. RADU, L. ION, S. ANTOHE
Affiliation:
University of Bucharest, Faculty of Physics, Magurele-Ilfov, Romania
E-mail
neanu68@yahoo.com
Keywords:
inorganic photovoltaic cells, CdTe, TCO
Abstract:
Photovoltaic cells based on CdTe thin films were prepared by thermal vacuum evaporation (TVE) onto optical glass substrates covered with ITO and ITO/IGZO thin films as transparent conductive oxides (TCO’s). IGZO thin films were deposited in situ onto ITO layers, by magnetron sputtering. The optical investigations revealed a transmittance higher than 60% in 190 – 1100 nm range for both ITO and ITO/IGZO layers. The optical gap for window (CdS, cadmium sulfide) and absorber (CdTe, cadmium telluride) films was determined and the obtained values were similar with those in literature; the structural features were analyzed by X-ray diffraction technique.
For the prepared photovoltaic structures electrical measurements were performed and the specific parameters, like external quantum efficiency (EQE), were calculated and compared.
This study showed that IGZO thin films can be used as TCO’s replacing the conventional ITO; moreover, a photoelectrical behavior was revealed improving the photovoltaic performances of the prepared samples.
Acknowledgments: This work was partially supported from the grant No. 64/2013.
R.C. is grateful to the University of Bucharest doctoral fellowship No ID 137750 for the financial support.
|
|
|
|