期刊
IEEE SENSORS JOURNAL
卷 11, 期 4, 页码 897-904出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JSEN.2010.2057421
关键词
Aluminum-doped zinc-oxide (ZnO:Al); spectroscopy; tin-sulphide (SnS); transparent conducting oxide (TCO); ultraviolet/visible/near-infrared (UV/Vis/NIR)
资金
- Christian Doppler Research Society of Austria
Exact optical analysis of transparent conducting oxide (TCO) and absorber layers are necessary to optimize adequate materials for thin-film solar cell applications. A non-numerical theoretical concept has been developed to extract approximation-free optical and electrical data from ultraviolet/visible/near-infrared (UV/Vis/NIR) spectra. Special focus has been set on double-layer systems, as thin films upon substrates. Complex parameter evaluation is possible. Sputtered TCO and absorber thin films-aluminum-doped zinc-oxide and tin-sulphide-have been analyzed with respect to process-temperature. Results were compared with those of the well-known Keradec/Swanepoel model. The necessity of taking both spectra-transmission and reflection spectra-into account has been shown. Results have been discussed with structural properties of the thin films with the help of X-ray diffraction measurements. A noncontact, optical conductivity measurement possibility by use of UV/Vis/NIR spectroscopy has been introduced. Optically measured conductivities sigma(L) were compared with those measured electrically with a four-tip measurement system.
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