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- W2178099730 abstract "We report a study on chalcopyrite solar cells fabricated by low-cost, nonvacuum, and selenization-free methods. Superstrate-type CuInS2 (CIS) thin-film solar cells were prepared by sequential ink deposition. The CIS film was formed from a stable low-carbon ink, which was synthesized at low temperature (<120 °C). The CIS nanoparticle ink was prepared with n-butylamine and acetic acid as the solvent and stabilizer, respectively. The viscous and stable ink that formed through the dispersion of the final nanoparticles in N,N-dimethylformamide (DMF) could be deposited readily onto the substrate. The major features of the obtained ink are the small amount of impurity phases and negligible carbon residue (ca. 2.8 %). The obtained ink was used for the fabrication of superstrate solar-cell devices with a glass/FTO/TiO2/In2S3/CIS/carbon (FTO = fluorine-doped tin oxide) structure. The performance of the solar cells was improved by optimizing different synthetic and geometric parameters, including the sulfur source, reaction time, reaction temperature, buffer-layer thickness and second annealing temperature. The best cells were obtained by using inks with thiourea as the sulfur source, and a high current density of 21 mA/cm2 and 5.2 % efficiency were obtained. This current density is the highest among those reported for solution-based superstrate CIS solar cells and is comparable to those of solar cells fabricated with a selenization step at high temperature. The ink is stable, and the efficiency of the device fabricated with ink aged for 100 d is ca. 12 % less than that of the device fabricated with fresh ink." @default.
- W2178099730 created "2016-06-24" @default.
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- W2178099730 date "2015-11-19" @default.
- W2178099730 modified "2023-09-25" @default.
- W2178099730 title "Preparation of a CuInS <sub>2</sub> Nanoparticle Ink and Application in a Selenization‐Free, Solution‐Processed Superstrate Solar Cell" @default.
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- W2178099730 doi "https://doi.org/10.1002/ejic.201500749" @default.
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