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- W2091789097 abstract "Tin sulphide (SnS) quantum dots of size ranging from 2.4 to 14.4 nm are prepared by chemical precipitation method in aqueous media. Growth of the SnS particles is monitored by controlling the deposition time. Both XRD and SAED patterns confirm that the particles possess orthorhombic structure. The uncapped SnS particles showed secondary phases like Sn2S3 and SnS2 which is visible in the SAED pattern. From the electrochemical characterization, HOMO–LUMO levels of both TiO2 and SnS are determined and the band alignment is found to be favorable for electron transfer from SnS to TiO2. Moreover, the HOMO–LUMO levels varied for different particle sizes. Solar cell is fabricated by sensitizing porous TiO2 thin film with SnS QDs. Cell structure is characterized with and without buffer layer between FTO and TiO2. Without the buffer layer, cell showed an open circuit voltage (Voc) of 504 mV and short circuit current density (Jsc) of 2.3 mA/cm2 under AM1.5 condition. The low fill factor of this structure (15%) is seen to be increased drastically to 51%, on the incorporation of the buffer layer. The cell characteristics are analyzed using two different size quantum dots." @default.
- W2091789097 created "2016-06-24" @default.
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- W2091789097 date "2012-08-01" @default.
- W2091789097 modified "2023-09-23" @default.
- W2091789097 title "Growth and photovoltaic performance of SnS quantum dots" @default.
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- W2091789097 doi "https://doi.org/10.1016/j.mseb.2012.05.006" @default.
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