Electrodeposition of CulnSe, was investigated in acidic solutions containing Cu^(2+), In^(3+) and HSeO_2^+ ions. The electrodeposition condition was optimized with the aim of obtaining uniform thin films on titanium s...Electrodeposition of CulnSe, was investigated in acidic solutions containing Cu^(2+), In^(3+) and HSeO_2^+ ions. The electrodeposition condition was optimized with the aim of obtaining uniform thin films on titanium substrate. The mechanism of the electrodeposition process is discussed. Structure analysis of the deposited film shows a typical polycrystalline chalcopyrite structure, good crystallinity and homogeneous dispersion. The photoelectrochemical cells made of these kinds of deposited films in polysulfide redox solution give distinct photoresponse.展开更多
Electrodeposition process of polycrystalline Cd-rich Hg_(1-z)Cd_xTe (x>0.5) in acidic bath of CdSO_4+HTeO_2^+HgCl_2 was investigated. The simultaneous electrodeposition technique of three kinds of ions at the same ...Electrodeposition process of polycrystalline Cd-rich Hg_(1-z)Cd_xTe (x>0.5) in acidic bath of CdSO_4+HTeO_2^+HgCl_2 was investigated. The simultaneous electrodeposition technique of three kinds of ions at the same potential has been achieved. The XRD, SEM and EDAX analysis of the thin film electrodeposited on titanium substrate showed a typical cubic zinc blende polycrystalline structure and homogeneous dispersion. The photoelectrochemical behavior of (1-x)=0.09 polycrystalline thin film in a polysulfide redox couple solution was examined. Under illumination of 100 mW/cm^2, the short circuit photocurrent I_(sc)=1.88 mA/cm^2, the open circuit photovoltage V_(oc)=0.25 V, the fill factor F·F=0.22. The bandgap E_g measured with photoelectrochemical spectroscopy is 1.26 eV. Flatband potential φ_(tb), Obtained from Mott-Schottky curve is -1.26 Ⅴ (vs. SCE). Therefore, the obtainable maximum open circuit photovoltage could be 0.49 Ⅴ. The Cd-rich Hg_(1-x)Cd_x Te thin film should be a potential photoactive electrode material.展开更多
基金Project supported by the National Natural Science Foundation of China
文摘Electrodeposition of CulnSe, was investigated in acidic solutions containing Cu^(2+), In^(3+) and HSeO_2^+ ions. The electrodeposition condition was optimized with the aim of obtaining uniform thin films on titanium substrate. The mechanism of the electrodeposition process is discussed. Structure analysis of the deposited film shows a typical polycrystalline chalcopyrite structure, good crystallinity and homogeneous dispersion. The photoelectrochemical cells made of these kinds of deposited films in polysulfide redox solution give distinct photoresponse.
文摘Electrodeposition process of polycrystalline Cd-rich Hg_(1-z)Cd_xTe (x>0.5) in acidic bath of CdSO_4+HTeO_2^+HgCl_2 was investigated. The simultaneous electrodeposition technique of three kinds of ions at the same potential has been achieved. The XRD, SEM and EDAX analysis of the thin film electrodeposited on titanium substrate showed a typical cubic zinc blende polycrystalline structure and homogeneous dispersion. The photoelectrochemical behavior of (1-x)=0.09 polycrystalline thin film in a polysulfide redox couple solution was examined. Under illumination of 100 mW/cm^2, the short circuit photocurrent I_(sc)=1.88 mA/cm^2, the open circuit photovoltage V_(oc)=0.25 V, the fill factor F·F=0.22. The bandgap E_g measured with photoelectrochemical spectroscopy is 1.26 eV. Flatband potential φ_(tb), Obtained from Mott-Schottky curve is -1.26 Ⅴ (vs. SCE). Therefore, the obtainable maximum open circuit photovoltage could be 0.49 Ⅴ. The Cd-rich Hg_(1-x)Cd_x Te thin film should be a potential photoactive electrode material.
