Characterization of CuGa x Se y /ZnO for superstrate solar cells

Development of thin‐film Cu(In,Ga)Se2and CdTe solar cells

“…11 Investigations of the interface between the ZnO buffer layer and CIGS revealed the presence of a thin layer of Ga 2 O 3 which acts as barrier against photocurrent transport. 10,12,13 However, Na-free superstrate solar cells with efficiencies of up to 11Á2% have been obtained, but a strong light-soaking treatment was necessary. 14 The fundamental reasons for light-soakinginduced improvements in cell efficiency are not yet investigated.…”

Characterization of interface between CuInSe2 and In2O3

“…Hence it is possible that a small fraction of copper has diffused from CuInSe 2 layer into oxygen deficient In 2 O 3 in the present case. Literature reports show evidence for copper diffusion and other interactions at the interface in CuInSe 2 /CdS [10] and CuGa xSe y /ZnO structures [9]. The composition of the CuInSe 2 film determined by the simulation is 24.5% copper, 26.5% indium and 49% selenium.…”

“…Various research groups have studied the interface of CuInSe 2 with the other active elements involved in solar cells in terms of the possible chemical reaction, diffusion and compositional variations using spectroscopic methods and electrical measurements. Auger electron spectroscopy [4,5], X-ray photoelectron spectroscopy [5,6], I-V characteristics [7,8], C-V characteristics [8] and TEM [6,9] are the commonly used techniques. Apart from these, angular dependence of X-ray fluorescence, X-ray absorption fine structure and grazing incidence X-ray measurements have also been used [10].…”

A New Preparation Method of ZnO Cubic Phase Particle and Its IR Spectrum

“…4) The production of optically transparent and low-resistivity (n-type and p-type) ZnO films by doping appropriate elements 5) will open up various electrical and optical applications. 6) The low-resistivity ZnO film will be used as a transparent contact window material, replacing the indium tin oxide (ITO) film currently used. 7) ZnO has been known to crystallize only in a wurtzite structure.…”