Bulk p-CuInSe2 photo-electrochemical solar cells

Photoelectrochemical hydrogen-evolution over p-type chalcopyrite CuInSe2

“…More recently, we reported the physical properties of CISe and its potentiality to be used in PEC cells [14]. In continuation, we extend the work to the practical aspect i.e.…”

Electrochemical Atomic Layer Deposition of CuInSe2 on Au Surface

“…When the light was turned off, there was an immediate drop in the photo‐current generated. The observation is the PEC behavior expected from p‐type semiconductor material . Namely, the photon energy absorption of the material caused the electrons transferred from the conduction band of the CIS film to the solution‐phase oxidant (in this case H + ), which resulted in hydrogen evolution on the surface of the material, whereas the holes generated in the valence band moved in the opposite direction.…”

“…Though the photocurrent observed was lower, the PEC experiment revealed the information on the conductive nature and also the chemical stability of the film upon irradiation. The deposition of n‐type buffer layers of any of CdS, ZnSe, or TiO 2 on top of E‐ALD grown CIS films may be expected to improve the PEC response of the film and could act as good absorber material in photovoltaics . Further works in this line are in progress in this laboratory.…”

Synthesis and physical properties of solar material Cu1+xIn1‐xSe2

“…The as‐prepared crystalline sample was found to have characteristic peaks of (101), (112), (103), (211), (220)/(204), (312)/(116), (008)/(400), and (316)/(332) in accordance with the standard pattern of JCPDS# 81‐1936 30. It is indicated that the phase‐pure CuInSe 2 sample can be obtained even at 1073 K, lower than 1273 K 25, 26. The patterns of the Cu‐doped samples ( x = 0.1–0.3) are almost the same as the blank sample.…”

“…Unlike the reported reaction temperatures (1273–1423 K) in the literature 25–27, the CuInSe 2 ‐based compounds were prepared by a relatively lower temperature (1073 K) reaction process. We investigated crystal structure, thermal stability, optical absorbance, electrical conductivity, and Seebeck coefficient of Cu doped Cu 1+ x In 1‐ x Se 2 bulk material to shed some light on intrinsic nature of the material.…”