n-CuInS2/polysulfide photoelectrochemical solar cells prepared by spray pyrolysis

Abstract

n CulnS2 photoanode has been prepared by spray pyrolysis onto SnO2 deposited glass substrate at 350°C. The conductivity type of the photoanode was tested by hot-probe method and was of n type. The conductivity of the photoanode was of the order of 2-4f2 lcm ~ and was measured by using four-probe method. The effect of etching (HCI:HNO 3 = 5:1 by volume) on photoanode properties has been studied. The best cell had the following parameters: 1~o = 0.29 V, l c = 5.33 mA/cm 2, if= 0.571 and r/= 1.275%.

Shape-controlled synthesis and optical characterization of chalcopyrite CuInS2 microstructures

“…It is noted that various techniques such as chemical vapor deposition (CVD) [12], sputtering [13], spray pyrolysis [14], molecular beam deposition [15], and electrodeposition [16] have been explored to fabricate CuInS 2 . Since the shape, size, and dimensionality of semiconductors are important parameters for their properties, developing a facile method to synthesize ternary chalcogenide materials with various morphologies is of interest and importance for their further application [17].…”

Large-scale growth of porous CuInS 2 microspheres

“…There are various techniques for the preparation of CuInS 2 , such as co-evaporation [6], molecular beam deposition [7], sputtering [8], spray pyrolysis [9], electrodeposition [10], chemical vapor deposition (CVD) [11] and chemical processes [12,13]. To the best knowledge of us, several morphologies of CuInS 2 have been prepared, such as nanoparticles [14,15], nanorods [16,17], nanotubes [18] and foam-like CuInS 2 nanocrystallites [19].…”

Synthesis and characterization of CuInS2 nanostructure by ultrasonic-assisted method and different precursors

“…The chalcopyrite semiconductor CuInS 2 (CIS) is particularly promising, for photovoltaic applications because it has a layer absorption coefficient of about 10 À5 cm À1 and a direct band gap energy of approximately 1.54 eV which is in the optimum range for solar-energy conversion [4][5][6][7][8]. Hence, various studies have focused on providing a simple and suitable method for synthesis of CuInS 2 nanostructures and so various methods have been applied to synthesize CuInS 2 thin film and powders including molecular single-source precursors [9], solvothermal reactions [10][11][12][13][14][15][16], microemulsion method [17], microwave irradiation [18], surfactant-assisted chemical reactions [19,20], chemical vapor deposition (CVD) [21], sputtering [22], spray pyrolysis [23], molecular beam deposition [24], and electrodeposition [25]. These methods produced nanocrystals with different morphologies such as nanoparticles [26][27][28], hollow nanospheres [19], nanowires [12], nanorods [10,11], pyramidal nanocrystales [13], and porous microspheres [14,15].…”