Highly‐efficient superstrate Cu₂ZnSnS₄ solar cell fabricated low‐cost methods

Abstract

Phone: þ54 223 481 6600, Fax: þ54 223 481 0046 A recent accomplishment in the preparation of a highly efficient thin film solar cell is reported. This superstrate cell is composed of FTO/TiO 2 /In 2 S 3 /Cu 2 ZnSnS 4 /graphite. A maximum conversion efficiency of 3.5% has been achieved for the first time using this configuration and materials. The device includes low cost methods and nontoxic components. Details of the experimental procedures are provided and the device characterization data are presented and analyzed. Left: Current-voltage response of the best cell FTO/TiO 2 / In 2 S 3 /Cu 2 ZnSnS 4 /graphite in the dark (dotted line) and under simulated solar irradiation (solid line). Right: Cross-sectional view of the cell. Inset: Profilometric scan of the device.Rapid Research Letter 1700144 (3 of 5) M. Berruet et al.: Highly-efficient superstrate Cu 2 ZnSnS 4 solar cell ß

Carrier recombination and transport dynamics in superstrate solar cells analyzed by modeling the intensity modulated photoresponses

“…Details of precursorsolutions preparation can be found elsewhere. 46,49,50 The TiO 2 layer was deposited over a hot plate at 350 • C, spraying 10 cycles of 20 s of duration with 60 s pauses between cycles. After the deposition process, the samples were maintained at 450 • C on the hot plate during 60 min and cooled at room temperature.…”

“…Two spin coating cycles were used and, between the cycles a 10 min thermal treatment at 150 • C was used. Finally a second 10 minutes thermal treatment was performed at 250 • C. 46,49,50 The final architecture of the cell is observed in Figure 10. The electrical contacts were painted with conductive graphite ink (Alpha Aesar).…”

“…The electrical contacts were painted with conductive graphite ink (Alpha Aesar). 46,49,50 Glass FTO TiO 2…”

Role of carbon quantum dot for enhanced performance of photo-absorption in Cu2CoSnS4 superstrate solar cell device

“…They used ntype and top electrode as In 2 S 3 and graphite. 5 Yan et al found an efficiency of 2.15% for CZTS in superstrate configuration; they incorporated a P3HT layer into a p-type layer with a Cu electrode. 6 Tumbul et al revealed the efficiency of a solar cell with superstrate type CZTS as 0.7%.…”

“…Berruet M et al reported that the efficiency of the CZTS superstrate type as 3.5 %. They used n-type and top electrode as In 2 S 3 and graphite [5]. Yan R et al found the efficiency of 2.15 % for CZTS in superstrate configuration; they incorporated the P3HT layer into the p-type layer with Cu electrode [6].…”