Figure - available from: Journal of Materials Science: Materials in Electronics
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a Schematic structure of a-SiGe:H solar cell with IOH/Ag/Cr/Al on glass substrate. b Schematic band diagram of a-SiGe:H solar cell (EC: the conduction band edge, EV: the valence band edge, EF: the Fermi level)
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In this work, high efficiency p-i-n structure hydrogenated amorphous silicon germanium (a-SiGe:H) thin film solar cells were prepared via optimizing hydrogenated indium oxide In2O3:H (IOH) and silver/chromium/aluminum (Ag/Cr/Al) back reflector (BR) layers. Layer wise films including Al, Ag/Cr/Al and IOH/Ag/Cr/Al BR materials were fabricated into so...
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For thin film solar cells, it has been reported that using hydrogenated amorphous silicon oxide in absorber layer (with low oxygen concentration) could generate more electricity than hydrogenated amorphous silicon layers in short wavelengths due to wide band gap (E g). This work is concerned about the analysis of all p-in amorphous silicon oxide ba...
Citations
... Among them, gas sensors made by semiconductors, especially metal oxide semiconductors (MOS), have attracted extensive attention due to their advantages of environmental protection, simple preparation, low cost, and good stability [12][13][14]. Among a large number of MOS materials, In 2 O 3 , as a typical n-type semiconductor material, has become a hot research topic due to its wide bandgap width and low resistivity, and has been widely used in liquid crystal devices, solar cells, and gas sensors [15][16][17]. By referring to the previous research results, it has been found that In 2 O 3 nanomaterials show good gas sensing response to both oxidation and reductive gases, so In 2 O 3 is a gas-sensitive material with great research potential. ...
By controlling the hydrothermal time, porous In2O3 nanosheet-assembled micro-flowers were successfully synthesized by a one-step method. The crystal structure, microstructure, and internal structure of the prepared samples were represented by an x-ray structure diffractometry, scanning electron microscopy, and transmission electron microscopy, respectively. The characterization results showed that when the hydrothermal time was 8 h, the In2O3 nano materials presented a flower-like structure assembled by In2O3 porous nanosheets. After successfully preparing the In2O3 gas sensor, the gas sensing was fully studied. The results show that the In2O3 gas sensor had an excellent gas sensing response to ethanol, and the material prepared under 8 h hydrothermal conditions had the best gas sensing property. At the optimum working temperature of 270 °C, the highest response value could reach 66, with a response time of 12.4 s and recovery time of 10.4 s, respectively. In addition, the prepared In2O3 gas sensor had a wide detection range for ethanol concentration, and still had obvious response for 500 ppb ethanol. Furthermore, the gas sensing mechanism of In2O3 micro-flowers was also studied in detail.
