TY - JOUR
T1 - Synthesis, Structural and Optical Properties of ZrBi2Se6Nanoflowers
T2 - A Next-Generation Semiconductor Alloy Material for Optoelectronic Applications
AU - Aher, Rahul
AU - Punde, Ashvini
AU - Shinde, Pratibha
AU - Shah, Shruti
AU - Doiphode, Vidya
AU - Waghmare, Ashish
AU - Hase, Yogesh
AU - Bade, Bharat R.
AU - Jadhav, Yogesh
AU - Prasad, Mohit
AU - Pathan, Habib M.
AU - Patole, Shashikant P.
AU - Jadkar, Sandesh R.
N1 - Funding Information:
A.P. is thankful to the Mahatma Jyotiba Phule Research and Training Institute (MAHAJYOTI), Government of Maharashtra, for the Mahatma Jyotiba Phule Research Fellowship (MJPRF). S.S., Y.H., V.D., A.W., P.S., and B.B. thank MNRE, GOI for the financial support under the NREF program. M.P. and S.J. are grateful to the CEFIPRA, Department of Science and Technology, New Delhi, for special financial support. S.P. would like to thank Khalifa University for its financial support through the internal fund for high-quality publications. Y.J. thanks SPPU PDF (PDF/ST/CH/2019/0004) for financial support.
Publisher Copyright:
© 2022 The Authors. Published by American Chemical Society.
PY - 2022/9/13
Y1 - 2022/9/13
N2 - ZrBi2Se6 nanoflower-like morphology was successfully prepared using a solvothermal method, followed by a quenching process for photoelectrochemical water splitting applications. The formation of ZrBi2Se6 was confirmed by field emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD), Raman spectroscopy, and X-ray photoelectron spectroscopy (XPS). The estimated value of work function and band gap were found to be 5.5 and 2.26 eV measured using diffuse reflection spectroscopy and ultraviolet photoelectron spectroscopy, suggesting the potential candidate for water splitting. The highest current density of 9.7 μA/cm2 has been observed for the ZrBi2Se6 photoanode for the applied potential of 0.5 V vs SCE. The flat-band potential value was -0.46 V, and the 1.85 nm width of the depletion region is estimated from the Mott-Schottky (MS) analysis. It also reveals that the charge carrier density for the ZrBi2Se6 nanoflowers is 4.8 × 1015 cm-3. The negative slope of the MS plot indicates that ZrBi2Se6 is a p-type semiconductor. It was observed that ZrBi2Se6 nanoflowers had a high charge transfer resistance of ∼730 kω and equivalent capacitance of ∼40 nF calculated using electrochemical impedance spectroscopy (EIS) measurements. Using chronoamperometry, the estimated rise time and decay time were 50 ms and 0.25 s, respectively, which reveals the fast photocurrent response and excellent PEC performance of the ZrBi2Se6 photoanode. Furthermore, an attempt has been made to explain the PEC activity of ZrBi2Se6 nanoflowers using an energy band diagram. Thus, the initial results on ZrBi2Se6 nanoflowers appear promising for the PEC activity toward water splitting.
AB - ZrBi2Se6 nanoflower-like morphology was successfully prepared using a solvothermal method, followed by a quenching process for photoelectrochemical water splitting applications. The formation of ZrBi2Se6 was confirmed by field emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD), Raman spectroscopy, and X-ray photoelectron spectroscopy (XPS). The estimated value of work function and band gap were found to be 5.5 and 2.26 eV measured using diffuse reflection spectroscopy and ultraviolet photoelectron spectroscopy, suggesting the potential candidate for water splitting. The highest current density of 9.7 μA/cm2 has been observed for the ZrBi2Se6 photoanode for the applied potential of 0.5 V vs SCE. The flat-band potential value was -0.46 V, and the 1.85 nm width of the depletion region is estimated from the Mott-Schottky (MS) analysis. It also reveals that the charge carrier density for the ZrBi2Se6 nanoflowers is 4.8 × 1015 cm-3. The negative slope of the MS plot indicates that ZrBi2Se6 is a p-type semiconductor. It was observed that ZrBi2Se6 nanoflowers had a high charge transfer resistance of ∼730 kω and equivalent capacitance of ∼40 nF calculated using electrochemical impedance spectroscopy (EIS) measurements. Using chronoamperometry, the estimated rise time and decay time were 50 ms and 0.25 s, respectively, which reveals the fast photocurrent response and excellent PEC performance of the ZrBi2Se6 photoanode. Furthermore, an attempt has been made to explain the PEC activity of ZrBi2Se6 nanoflowers using an energy band diagram. Thus, the initial results on ZrBi2Se6 nanoflowers appear promising for the PEC activity toward water splitting.
UR - https://www.scopus.com/pages/publications/85137719237
U2 - 10.1021/acsomega.2c02666
DO - 10.1021/acsomega.2c02666
M3 - Article
AN - SCOPUS:85137719237
SN - 2470-1343
VL - 7
SP - 31877
EP - 31887
JO - ACS Omega
JF - ACS Omega
IS - 36
ER -