Open AccessFabrication of transparent ZnO/(CuZn)O heterojunction solar cells by electrochemical deposition
Author(s) -
Mansoureh Keikhaei,
Masaya Tanaka,
M. Ichimura
Publication year - 2020
Publication title -
materials research express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.383
H-Index - 35
ISSN - 2053-1591
DOI - 10.1088/2053-1591/aba6e4
Subject(s) - x ray photoelectron spectroscopy , materials science , heterojunction , annealing (glass) , amorphous solid , thin film , fabrication , electrochemistry , chemical engineering , analytical chemistry (journal) , optoelectronics , nanotechnology , metallurgy , electrode , crystallography , chemistry , medicine , alternative medicine , pathology , chromatography , engineering
Transparent (CuZn)O thin films were fabricated via electrochemical deposition at room temperature from an aqueous solution containing Zn(NO 3 ) 2 and Cu(NO 3 ) 2 , and properties of the films were studied before and after annealing at 400 °C in air. According to x-ray photoelectron spectroscopy results, copper was in the Cu 1+ oxidation state. All the samples before and after the annealing were found to be amorphous by x-ray diffraction, and p-type conductivity was found by photoelectrochemical characterizations. Transparent p-n heterojunction ZnO/(CuZn)O was fabricated by depositing ZnO on as-deposited and annealed (CuZn)O. For both as-deposited and annealed (CuZn)O, rectifying characteristics and photovoltaic effects were observed.