Cu₂SnS₃ thin film solar cells prepared by thermal crystallization of evaporated Cu/Sn precursors in sulfur and tin atmosphere

Abstract

Cu2SnS3 thin films were prepared by crystallization in sulfur and tin mixing atmosphere from the stacked Cu/Sn precursors deposited by sequential evaporation of Sn and Cu elements. From EPMA analysis, the composition of the thin film was approximately constant regardless changing Sn mole ratio in the precursor. However, the composition of inside of the thin films and Mo layer had gradation. The Raman analysis showed that the spectrum corresponded to monoclinic Cu2SnS3. Cu2SnS3 thin films were applied to the fabrication of Cu2SnS3 solar cells. The values of Voc and Isc increased with decreasing Sn mole ratio in the precursor. The largest Voc of 247.5 mV was achieved in sample of Cu/Sn mole ratio of 2/1.2, which is comparable with early reported value of Voc. (© 2015 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

Novel antibacterial application of photovoltaic Cu2SnS3 (CTS) nanoparticles

“…1(b) depicts the intense vibrational mode peaks at 293.35 cm À1 , 320.59 cm À1 , 351.38 cm À1 and 376.18 cm À1 that correspond to the monoclinic Cu 2 SnS 3 phase, and matches well with the literature report. 26 The observed slight shi in the Raman peak positions in the present work compared with the literature report can be attributed to the slight deviation in the elemental composition. The shoulder peak at 320.59 cm À1 is attributed to Cu-Sn atomic bond vibration and the broad nature of these vibrational peaks is associated with the phonon connement effect.…”

Formation of copper tin sulfide films by pulsed laser deposition at 248 and 355 nm

“…in successful solar cells [36,37]). However, by reducing the fluence somewhat it will be possible to reach the optimal Cu/Sn ratio with both the 248 nm and the 355 nm laser.…”

Optical Properties of Cu2S/SnS2 Precursor Layers for the Preparation of Kesterite Cu2SnS3 Photovoltaic Absorber

“…Thin film solar cells attract much attention due to their low cost, high stability and efficiency. Most of the research is focused on p-type semiconductor Cu(In,Ga)(S/Se) 2 and CdTe absorber layers. The efficiency of solar cell power conversion of chalcopyrite based Cu(In,Ga)Se 2 thin films can reach 22% [1].…”

“…Recently, some ternary compounds in Cu-Sn-S system, namely Cu 2 SnS 3 , Cu 2 Sn 3 S 7 , Cu 3 SnS 4 , Cu 4 SnS 4, Cu 4 SnS 5 , and Cu 4 Sn 7 S 16 have been offered as possible candidates for photovoltaic applications [2][3][4]. Among the listed sulfides, Cu 2 SnS 3 (CTS) is considered to be the most promising absorber material due to its chemical and thermal stability; moreover, its constituents are earth abundant and non-toxic.…”