Mechanism study of morphological evolution of Cu2FeSnSe4 nanoparticles synthesized with solvothermal method

The controlled deposition of Cu2(ZnyFe1−y)SnS4, Cu2(ZnyFe1−y)SnSe4and Cu2(ZnyFe1−y)Sn(SxSe1−x)4thin films by AACVD: potential solar cell materials based on earth abundant elements

“…All these peaks are shifted from Raman peaks for CFTSe (209, 270 cm À1 ) or CFTS (321, 284, 218 cm À1 ) phases as expected. 7,8,[26][27][28] Band gap measurements of CZFTS for Zn-rich composition showed 1.72 eV whereas those with Fe-rich composition gave a band gap of 1.67 eV, which are close to those reported previously. 2,7 Raman spectra obtained for the Fe-rich CZFTSe films showed a broad peak with low intensity at 230 cm À1 .…”

“…2,7 The calculated band gaps were 1.48 and 1.47 eV for Zn-rich and Fe-rich CZFTSe thin films respectively which are in the range of CZTS, CZTSe, CZTSSe and CFTSe. [27][28][29] UV/Vis Tauc plots drawn by ploting (ahn) 2 against hn gave a band gap values of B1.64 and 1.61 eV for Zn-rich and Fe-rich CZFTSSe thin films, which were closer to that of the Kesterite CZFTS phases. 2,[6][7][8][14][15][16][17][18][19][20] Electrical sheet resistance Variation in the electrical sheet resistance with different Fe-compositions has been studied.…”

Structural, optical and electrical properties of Cu2FeSnX4 (X=S, Se) thin films prepared by chemical spray pyrolysis

“…For the sake of alternative absorber layer, a member of Cu-based quaternary chalcogenide family Cu 2 FeSnS 4 (Se 4 ) (CFTS (Se)) [6] has been considered as a promising candidate due to earth abundant constituents and similar structural and optical properties to CZTSSe [2,4,7,8]. Recently, a number of researches have been carried out on CFTS (Se) materials and reported to have optical band gaps, 1.28-1.50 eV for CFTS [7][8][9][10][11][12][13][14][15][16] and 1.10-1.25 eV for CFTSe [17][18][19] suitable for absorber layer in photovoltaic application. The crystal structure of CFTS (Se) (stannite (ST), space group (I 2m)) is shown in Fig.…”

“…Meng et al [17] have fabricated CFTSe thin film from sputtered precursor followed by selenization. CFTSe sheet [18] and nanoparticles including nanoflowers and nanosheets [19] have been successfully synthesized by solvothermal method. Liu et al [21] have reported colloidal synthesis of CFTSe nanocrystal by a hot-injection approach.…”

The AACVD of Cu2FeSn(SxSe1−x)4: potential environmentally benign solar cell materials

“…3) which are in agreement with the reported peaks for CFTSe (209, 270 cm À1 ). 40,41 Optical and electrical properties of CFTS, CFTSe and CFTSSe thin films…”