Photoelectrochemical water splitting using Cu(In,Al)Se2 photoelectrodes developed via selenization of sputtered Cu–In–Al metal precursors

Characterization and photoelectrochemical properties of CICS thin films grown via an electrodeposition route

“…Thus, the Ce contents acts as an electrical dopant to decrease the hole acceptor density, which is consistent with previous reports. 45 Nevertheless, it seems that our outcomes were disagreeing to some previous reports claiming that Zn, Sb and Ni ions one could improve the charge carriers of CIS lms. 46 On the other hand, the at-band potentials were extrapolated to À0.41-0.35 V and À0.25 V vs. SCE with the rise of Ce content up to 0.1 at% and noticeably decreases to À0.63 V thereaer, which means that at band potential is shied towards more cathodic potentials beyond 0.1 at% of Ce content.…”

Wide Band Gap CuGa(S,Se)2 Thin Films on Transparent Conductive Fluorinated Tin Oxide Substrates as Photocathode Candidates for Tandem Water Splitting Devices

“…Photoelectrochemical (PEC) water splitting − using a tandem device , is a promising way to produce hydrogen efficiently enough to be economically competitive with fossil fuels. , For such a tandem device, copper chalcopyrites are attractive candidates for both the top and bottom cells because of their high photoconversion efficiency, as demonstrated in Cu­(In,Ga)­Se 2 photovoltaics, as well as their band gap ( E G ) tunability from 1.0 to 3.0 eV . These attributes make copper chalcopyrites attractive absorber candidates for PEC top cells in particular, where a wide- E G (1.6–1.8 eV) is required for high solar-to-hydrogen (STH) tandem device efficiency. − For these reasons, exploration and progress into the applications of several wide- E G chalcopyrites (e.g., CuGaSe 2 Cu­(In,Ga)­S 2 , , Cu­(In,Al)­Se 2 , and (Ag,Cu)­GaSe 2 ) as candidate top cell absorbers for water splitting tandem devices has continued throughout the last decade . However, although one report has recently been published on its use in photovoltaics, CuGa­(S,Se) 2 is a wide- E G chalcopyrite that has not yet received any attention for PEC water splitting.…”

“…9 These attributes make copper chalcopyrites attractive absorber candidates for PEC top cells in particular, where a wide-E G (1.6−1.8 eV) is required for high solar-to-hydrogen (STH) tandem device efficiency. 10−13 For these reasons, exploration and progress into the applications of several wide-E G chalcopyrites (e.g., CuGaSe 2 14 Cu(In,Ga)-S 2 , 15,16 Cu(In,Al)Se 2 , 17 and (Ag,Cu)GaSe 2 18 ) as candidate top cell absorbers for water splitting tandem devices has continued throughout the last decade. 19 However, although one report has recently been published on its use in photovoltaics, 20 CuGa(S,Se) 2 is a wide-E G chalcopyrite that has not yet received any attention for PEC water splitting.…”

First-principles investigations of structural, optoelectronic and thermoelectric properties of Cu-based chalcogenides compounds

“…The ternary compounds such as CuInSe 2 , CuAlSe 2 and CuGaSe 2 [35][36][37][38] have also attracted the attention of researchers. The scarcity of both indium (In) and gallium (Ga) increases their cost, and, thus, using these elements as absorbers materials increases the cost of solar cells and limits their wide application in copper indium gallium selenide solar cell (CIGSS) [39].…”