Room temperature deposition of nanostructured Bi2Se3 thin films for photoelectrochemical application: effect of chelating agents
作者： Suvarta D. Kharade , Nita B. Pawar , Vishvanath B. Ghanwat , Sawanta S. Mali , Woo Ri Bae
DOI: 10.1039/C3NJ00463E
关键词:
摘要: Nanostructured bismuth selenide (Bi2Se3) thin films have been deposited by chemical bath deposition method at room temperature using three different chelating agents, trisodium citrate, triethanolamine and ethylenedimminetetraacetic acid. The structural, morphological, optical photoelectrochemical properties of Bi2Se3 investigated as a function agents. X-Ray diffraction studies revealed that the were nanocrystalline in nature with rhombohedral crystal structure. Trisodium citrate chelate resulted poor crystallinity; further improvement crystallinity was observed acid chelates. From scanning electron microscopy, uniform sphere-like morphology having an average sphere diameter 90 nm chelate. In case triethanolamine, fibrous fiber thickness 60 observed, whereas for chelate, vertically arrayed petal-like petal 50–70 observed. UV-Vis absorption band gap energy chelates 1.55, 1.48 1.40 eV, respectively. maximum short circuit current densities (Jsc) 0.158, 0.214 0.284 mA cm−2 corresponding open voltages (Voc) 196, 206 217 mV obtained chelates, show better performance compared
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