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We are presenting porous-structured ZnO films grown by two-step chemical bath deposition (CBD), which has the potential to be used as a porous electrode in dye-sensitized solar cells (DSSCs). ZnS films were deposited on corning glass substrates by a stirred aqueous solution. Subsequent oxidization of ZnS films gave rise to ZnO thin films. The ZnO films exhibited a strong (002) diffractive peak, which...
The fabrication and properties of CdTe layer are most important to the performance of CdTe thin film solar cells, among their several function layers. In the paper, a technology of closed-space sublimation(CSS) in Ar+O2 atmosphere has been studied and a method of depositing CdTe thin films on smooth glass substrate has been developed. The structural properties of these films deposited in an appropriate...
This paper describes our progress achieved in thin-film free-standing monocrystalline silicon (FMS) solar cells by layer transfer process using porous silicon. The highest cell efficiency achieved for a 1times1 cm2 FMS solar cell is 13.5% with an open circuit voltage Voc=612 mV, current density Jsc =28.9 mA/cm2 and fill factor of FF=76.7%. In the effort of scaling-up of the cell area, the lift-off...
We report the surface and structural evolution of hotwire chemical vapor deposited (HWCVD) crystalline Si thin films with temperature, thickness, and hydrogen dilution and the resulting growth regimes and electronic properties. We focus on a low silane partial pressure regime that leads to epitaxial growth with a polycrystalline, rather than an amorphous transition. Using scanning electron microscopy...
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