Comparative study of ZnS thin films deposited by CBD and coevaporation

Author

Romero, E. ; Vallejo, W. ; Gordillo, G.

Author_Institution

Departamento de QuÃ\xadmica, Universidad Nacional de Colombia, Colombia

fYear

2008

fDate

11-16 May 2008

Firstpage

1

Lastpage

5

Abstract

A comparative study was carried out of ZnS(O,OH) thin films deposited from chemical bath containing thiourea, zinc acetate, ammonia and sodium citrate, and ZnS films prepared by co-evaporation of Zn and elemental sulphur. ZnS is an environmentally friendly material with a wide band gap (Eg =3.7 eV) compared to CdS (2.4 eV), which is conventionally used as buffer layer in chalcopyrite based solar cells. Suitable conditions for reproducible deposition of good quality ZnS(O,OH) and ZnS thin films have been determined. The samples were investigated by UV-VIS spectrophotometry, X-ray diffraction and AFM microscopy. The effects of growth method and synthesis parameters on optical, structural and morphological properties of the ZnS thin films have been studied.

Keywords

Atomic force microscopy; Buffer layers; Chemical elements; Optical diffraction; Optical films; Photovoltaic cells; Sputtering; Wideband; X-ray diffraction; Zinc compounds;

fLanguage

English

Publisher

ieee

Conference_Titel

Photovoltaic Specialists Conference, 2008. PVSC '08. 33rd IEEE

Conference_Location

San Diego, CA, USA

ISSN

0160-8371

Print_ISBN

978-1-4244-1640-0

Electronic_ISBN

0160-8371

Type

conf

DOI

10.1109/PVSC.2008.4922880

Filename

4922880