A new CdTe/ZnO columnar composite film for Eta-solar cells

✍ Scribed by C. Lévy-Clément; A. Katty; S. Bastide; F. Zenia; I. Mora; V. Munoz-Sanjose

• Book ID: 104428133
• Publisher: Elsevier Science
• Year: 2002
• Tongue: English
• Weight: 130 KB
• Volume: 14
• Category: Article
• ISSN: 1386-9477
• DOI: 10.1016/s1386-9477(02)00390-9

✦ Synopsis

First results of CdTe deposition on ZnO ÿlms consisting of free standing single crystalline columns of several micrometers height and ∼100-200 nm diameter are presented. The ZnO ÿlms have been obtained by electrochemical deposition on conductive glass. Morphology, structural and optical properties of the nanostructured columnar CdTe=ZnO composite ÿlms have been studied. The cadmium telluride (40 nm thick) deposited by vapor-phase epitaxy under dynamical vacuum is lining the ZnO columns as a continuous smooth thin ÿlm with conformal coverage. The polycrystalline CdTe layer is a mixture of cubic and hexagonal phases and is semiconductor with a direct band gap optical transition of 1:56 eV. The nanocomposite CdTe=ZnO ÿlm shows strong light trapping e ect and has considerable potential for use in photoelectric thin ÿlm devices.