Photoelectric Properties of ZnO/Si and Ag Doped ZnO/Si Heterojunctions

Abstract

A type of semiconductor heterojunctions was fabricated by ZnO thin film layer deposited on Si substrate. The elementary particles were examined by Energy Dispersive X-rays (EDX). X-ray Diffraction (XRD) analysis was described by structural properties of ZnO and Si layer. The study of ZnO growth morphology on Si substrate was determined by Scanning Electron Microscope (SEM). Then, the electrical and optical characteristics for ZnO-Si solar cell was investigated. Thermally simulated current (TSC) and I-V characteristics under different wavelengths in visible regions were also studied. In this work, the ZnO-Si thin film layer was indicated in photovoltaic effect. Moreover, studying silver contact on ZnO-Si heterojunction was purposed for achieving higher efficiency.