TY - JOUR
T1 - Low-temperature treated anatase TiO2 nanophotonic-structured contact design for efficient triple-cation perovskite solar cells
AU - Shahiduzzaman, Md
AU - Ismail Hossain, Mohammad
AU - Otani, Shuji
AU - Wang, Liang Le
AU - Umezu, Shinjiro
AU - Kaneko, Tetsuya
AU - Iwamori, Satoru
AU - Tomita, Koji
AU - Hong Tsang, Yuen
AU - Akhtaruzzaman, Md
AU - Knipp, Dietmar
AU - Nunzi, Jean Michel
AU - Isomura, Masao
AU - Antonio Zapien, Juan
AU - Taima, Tetsuya
N1 - Funding Information:
This study was financially supported by the Grant-in-Aid for Scientific Research Grant Number 20H02838. This study was partly supported by the Research and Study Project of Tokai University General Research Organization. This work is also supported by the Research Grants Council of Hong Kong, China (Project numbers: 152093/18E and 11210218). This study was also partly supported by the DANA IMPAK PERDANA (DIP) (Code: DIP-2018-007) grant from Universiti Kebangsaan Malaysia (UKM). The research was supported by a grant from the Innovation and Technology Commission of Hong Kong (Project Numbers: ITS/461/18 and GHP/040/19SZ).
Publisher Copyright:
© 2021 Elsevier B.V.
PY - 2021/12/15
Y1 - 2021/12/15
N2 - We report on the preparation and optimization of low temperature (<200 °C) processed TiO2 film as an electron transport layer (ETL) for high-performance perovskite solar cells (PSCs) compatible with flexible substrates. A high-quality ETL is spin-coated from hydrothermal synthesized single-phase crystalline anatase TiO2 nanoparticles (NPs) with an average diameter of 6 ~ 10 nm. The surface of the high crystallite TiO2 NPs reveals a tendency toward interparticle necking, facilitating compact scaffolds, resulting in PSCs with high power conversion efficiencies (PCEs). The influence of low and high temperature treated TiO2 ETL on the device performance is studied. The best planar device fabricated in superstrate configuration (sup-C) exhibits a PCE of 17.1% with a JSC of 20.3 mA/cm2. The PCE can be increased by ~ 25%, up to 23%, by moving from planar architecture in sup-C to the textured solar cell in substrate configuration (sub-C). The PSC covered with a nanophotonic-structured front contact allows gaining 8% and 15% on VOC and JSC, respectively, where 2/3 of JSC gain is attributed to improved light incoupling, while the remaining 1/3 is due to increased diffraction at long wavelengths. The optical and electrical characteristics of the devices are investigated by 3D finite-domain time-domain (FDTD) and finite element method (FEM) rigorous simulations. Detailed guidelines on the nanophotonic design are provided.
AB - We report on the preparation and optimization of low temperature (<200 °C) processed TiO2 film as an electron transport layer (ETL) for high-performance perovskite solar cells (PSCs) compatible with flexible substrates. A high-quality ETL is spin-coated from hydrothermal synthesized single-phase crystalline anatase TiO2 nanoparticles (NPs) with an average diameter of 6 ~ 10 nm. The surface of the high crystallite TiO2 NPs reveals a tendency toward interparticle necking, facilitating compact scaffolds, resulting in PSCs with high power conversion efficiencies (PCEs). The influence of low and high temperature treated TiO2 ETL on the device performance is studied. The best planar device fabricated in superstrate configuration (sup-C) exhibits a PCE of 17.1% with a JSC of 20.3 mA/cm2. The PCE can be increased by ~ 25%, up to 23%, by moving from planar architecture in sup-C to the textured solar cell in substrate configuration (sub-C). The PSC covered with a nanophotonic-structured front contact allows gaining 8% and 15% on VOC and JSC, respectively, where 2/3 of JSC gain is attributed to improved light incoupling, while the remaining 1/3 is due to increased diffraction at long wavelengths. The optical and electrical characteristics of the devices are investigated by 3D finite-domain time-domain (FDTD) and finite element method (FEM) rigorous simulations. Detailed guidelines on the nanophotonic design are provided.
KW - 3D electromagnetic simulations
KW - Anatase TiO NPs
KW - Low-temperature process
KW - Perovskite solar cells
UR - http://www.scopus.com/inward/record.url?scp=85114110542&partnerID=8YFLogxK
U2 - 10.1016/j.cej.2021.131831
DO - 10.1016/j.cej.2021.131831
M3 - Journal article
AN - SCOPUS:85114110542
SN - 1385-8947
VL - 426
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
M1 - 131831
ER -