| Paper Details: | Downloads: 514 |
| Serial Number: | P1111207114
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| Title: | The CdS/ZnO bilayers on various substrates for applications of photovoltaic devices by successive ion layer adsorption and reaction (SILAR)
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| Authors: | Rong-Fuh Louh and Lander Ho and Ray Chang and Mango Ho
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| Abstract: | The ultra-thin II-VI semiconductor CdS/ZnO bilayers (< 100 nm thickness) are primarily used as buffer layer and window layer for CuIn1-xGaxSe2 or CIGS thin film photovoltaic devices and can be easily deposited on various substrates including glass, silicon wafer, CIGS/glass, stainless steel foils, PET polymer substrates by a low temperature wet chemical synthesis technique, which was performed through 30~40 cycles of successive ion layer adsorption and reaction (SILAR) at relatively low temperature (60~80oC). The deposited CdS/ZnO bilayers were heat treated with a furnace at different temperatures (200~400oC) for improving its crystalline characteristics. The microstructure of such CdS/ZnO bilayers on various types of substrates including film thickness, particle size and morphology was modified and obtained through SILAR processing parameters. Along with thin film quality and morphology, the transmittance and reflectance of CdS/ZnO layers can be measured by field-emission SEM, XRD, AFM, and UV-Vis spectroscopy. The bilayers of CdS film (30~40 nm thickness)/ZnO film (50 nm thickness) with uniform thickness was successfully deposited on rigid substrates like glasses, silicon wafers and CIGS/glass or flexible substrates such as optical grade PET films and stainless steel foils. Our goal is to employ such CdS/ZnO bilayer structure on various substrates to be associated with thin-film photovoltaic devices to fulfill the desired continuous manufacturing process design and cost-effectiveness requirements.
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| Keywords: | wet chemical deposition, SILAR, PET, CdS, ZnO, bilayer structure, glass substrate, silicon wafer, CIGS/glass, stainless steel foil, PET substrates, photovoltaic devices.
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| Journal/Conference: | Recent Advances in Energy and Power Systems, RAEPS-12
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| Submission Date: | 2/15/2012 12:00:00 AM
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| Review Date: | 3/15/2012 4:04:24 PM
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| Publishing Date: | 4/6/2012 6:21:21 AM
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| Article Downloads: | 514
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