TY - JOUR
T1 - Periodic Micropillar-Patterned FTO/BiVO4 with Superior Light Absorption and Separation Efficiency for Efficient PEC Performance
AU - Ju, Sucheol
AU - Kang, Hojung
AU - Jun, Junho
AU - Son, Soomin
AU - Park, Jaemin
AU - Kim, Wonjoong
AU - Lee, Heon
N1 - Funding Information:
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No. 2020R1A2C3006382), the Technology Innovation Program (20000887, Development of self‐healing impact resistant film coating material and process technology for rollable displays) funded By the Ministry of Trade, Industry & Energy (MOTIE, Korea), and the International Research & Development Program of the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT (Grant number: 2019K1A47A02113032).
Publisher Copyright:
© 2021 Wiley-VCH GmbH
PY - 2021/5/20
Y1 - 2021/5/20
N2 - In this study, a high-performance photoanode based on 3D periodic, micropillar-structured fluorine-doped tin oxide (FTO-MP) deposited with BiVO4 is fabricated using the patterned FTO by direct printing and spray pyrolysis, followed by the deposition of BiVO4 by sputtering and V ion heat-treatment on the patterned FTO. The FTO-MP enables light scattering owing to its 3D periodic structure and increases the light absorption efficiency. In addition, the high electron mobility of FTO and enlarged surface area of FTO-MP enhance the separation efficiency. Due to the combination of these enhancing strategies, the photocurrent density of micropillar-patterned BiVO4 at 1.23 VRHE reached 2.97 mA cm−2, which is 67.8% higher than that of flat BiVO4. The results suggest that the efficiency can increase significantly using the patterned FTO fabricated by an inexpensive and simple process (i.e., direct printing and spray pyrolysis), thereby indicating a new strategy for the enhancement of efficiency in various energy fields.
AB - In this study, a high-performance photoanode based on 3D periodic, micropillar-structured fluorine-doped tin oxide (FTO-MP) deposited with BiVO4 is fabricated using the patterned FTO by direct printing and spray pyrolysis, followed by the deposition of BiVO4 by sputtering and V ion heat-treatment on the patterned FTO. The FTO-MP enables light scattering owing to its 3D periodic structure and increases the light absorption efficiency. In addition, the high electron mobility of FTO and enlarged surface area of FTO-MP enhance the separation efficiency. Due to the combination of these enhancing strategies, the photocurrent density of micropillar-patterned BiVO4 at 1.23 VRHE reached 2.97 mA cm−2, which is 67.8% higher than that of flat BiVO4. The results suggest that the efficiency can increase significantly using the patterned FTO fabricated by an inexpensive and simple process (i.e., direct printing and spray pyrolysis), thereby indicating a new strategy for the enhancement of efficiency in various energy fields.
KW - BiVO
KW - direct printing
KW - micropillar-structured FTO
KW - photoelectrochemical
UR - http://www.scopus.com/inward/record.url?scp=85104349068&partnerID=8YFLogxK
U2 - 10.1002/smll.202006558
DO - 10.1002/smll.202006558
M3 - Article
C2 - 33864345
AN - SCOPUS:85104349068
SN - 1613-6810
VL - 17
JO - Small
JF - Small
IS - 20
M1 - 2006558
ER -