A promising ternary sulfide bidirectional p–n heterojunction for unassisted tandem photoelectrochemical cells. Issue 40 (19th April 2021)

• Record Type: Journal Article
• Authors: Qian, Hongxia; Liu, Zhifeng; Guo, Zhengang; Ruan, Mengnan; Yan, Weiguo
• Is Part Of: Chemical communications. Volume 57:Issue 40(2021)
• Page Start: 4910
• Page End: 4913
• Publication Date: 2021-04-19
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/d1cc01240a
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : There has been great demand for high-efficiency, low-cost, and abundant photoelectrode materials for photoelectrochemical (PEC) systems. Abstract : There has been great demand for high-efficiency, low-cost, and abundant photoelectrode materials for photoelectrochemical (PEC) systems. Here, we studied the PEC performance of ternary sulfide photoelectrodes (ZnIn2 S4 and CuInS2 ) with the same nanostructure and applied bidirectional p–n heterojunctions with energy levels that were well matched to the unassisted tandem PEC cell device. Moreover, ZnIn2 S4 /CuInS2 and CuInS2 /ZnIn2 S4 were used as a photoanode and photocathode, respectively, in the unassisted tandem PEC cell device, which achieved a relatively high photocurrent density of 0.06 mA cm −2 . This work provides new ideas for the design and manufacture of high-efficiency unassisted tandem PEC cell devices.