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Iron pyrite, FeS2 is a semiconductor that has attention as next generation material for solar cells. We reported the evaluation of band structure and the conductivity of FeS2 thin film toward a realization of FeS2 heterojunction solar cells. FeS2 thin film was prepared by spin-coating. The pyridine solution which included Iron(III) acetylacetonate was utilized as a precursor ink and the precursor...
CuGaSe2 thin films with different Cu/Ga ratio were studied using photoluminescence (PL) method. Measurement at 1.4 K shows asymmetrically broadened PL spectra for all the samples where PL-peaks shift to lower energy with a decrease of the Cu/Ga ratio. Excitation power and temperature dependent PL spectra were explained using donor to acceptor pair transition under the influence of potential fluctuation...
The polycrystalline samples of BaSi2, SrSi2, and LaSi were prepared by spark plasma sintering (SPS). The electrical resistivity (rho) and Seebeck coefficient (S) were measured above room temperature. The S of BaSi2 was negative and the absolute values were rather high (-669 muVK-1 at 337 K). The S of SrSi2 was positive and the absolute values were lower (118 muVK-1 at 332 K) than those of BaSi2. For...
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