TY - JOUR
T1 - Spray Pyrolyzed TiO2 Embedded Multi-Layer Front Contact Design for High-Efficiency Perovskite Solar Cells
AU - Shahiduzzaman, Md
AU - Hossain, Mohammad Ismail
AU - Visal, Sem
AU - Kaneko, Tetsuya
AU - Qarony, Wayesh
AU - Umezu, Shinjiro
AU - Tomita, Koji
AU - Iwamori, Satoru
AU - Knipp, Dietmar
AU - Tsang, Yuen Hong
AU - Akhtaruzzaman, Md
AU - Nunzi, Jean Michel
AU - Taima, Tetsuya
AU - Isomura, Masao
N1 - Funding Information:
This study was supported in part by the Research and Study Project of Tokai University General Research Organization and by the Grant-in-Aid for Scientific Research Grant Number 20H02838. The authors also extended their appreciation to the Universiti Kebangsaan Malaysia for supporting this study through FRGS/1/2017/TK07/UKM/02/9 Grant. This work is also supported by the Research Grants Council of Hong Kong, China (Project Number: 152093/18E).
Funding Information:
This study was supported in part by the Research and Study Project of Tokai University General Research Organization and by the Grant-in-Aid for Scientific Research Grant Number 20H02838. The authors also extended their appreciation to the Universiti Kebangsaan Malaysia for supporting this study through FRGS/1/2017/TK07/UKM/02/9 Grant. This work is also supported by the Research Grants Council of Hong Kong, China (Project Number: 152093/18E).
Publisher Copyright:
© 2020, The Author(s).
PY - 2021/1
Y1 - 2021/1
N2 - The photovoltaic performance of perovskite solar cells (PSCs) can be improved by utilizing efficient front contact. However, it has always been a significant challenge for fabricating high-quality, scalable, controllable, and cost-effective front contact. This study proposes a realistic multi-layer front contact design to realize efficient single-junction PSCs and perovskite/perovskite tandem solar cells (TSCs). As a critical part of the front contact, we prepared a highly compact titanium oxide (TiO2) film by industrially viable Spray Pyrolysis Deposition (SPD), which acts as a potential electron transport layer (ETL) for the fabrication of PSCs. Optimization and reproducibility of the TiO2 ETL were discreetly investigated while fabricating a set of planar PSCs. As the front contact has a significant influence on the optoelectronic properties of PSCs, hence, we investigated the optics and electrical effects of PSCs by three-dimensional (3D) finite-difference time-domain (FDTD) and finite element method (FEM) rigorous simulations. The investigation allows us to compare experimental results with the outcome from simulations. Furthermore, an optimized single-junction PSC is designed to enhance the energy conversion efficiency (ECE) by > 30% compared to the planar reference PSC. Finally, the study has been progressed to the realization of all-perovskite TSC that can reach the ECE, exceeding 30%. Detailed guidance for the completion of high-performance PSCs is provided.[Figure not available: see fulltext.]
AB - The photovoltaic performance of perovskite solar cells (PSCs) can be improved by utilizing efficient front contact. However, it has always been a significant challenge for fabricating high-quality, scalable, controllable, and cost-effective front contact. This study proposes a realistic multi-layer front contact design to realize efficient single-junction PSCs and perovskite/perovskite tandem solar cells (TSCs). As a critical part of the front contact, we prepared a highly compact titanium oxide (TiO2) film by industrially viable Spray Pyrolysis Deposition (SPD), which acts as a potential electron transport layer (ETL) for the fabrication of PSCs. Optimization and reproducibility of the TiO2 ETL were discreetly investigated while fabricating a set of planar PSCs. As the front contact has a significant influence on the optoelectronic properties of PSCs, hence, we investigated the optics and electrical effects of PSCs by three-dimensional (3D) finite-difference time-domain (FDTD) and finite element method (FEM) rigorous simulations. The investigation allows us to compare experimental results with the outcome from simulations. Furthermore, an optimized single-junction PSC is designed to enhance the energy conversion efficiency (ECE) by > 30% compared to the planar reference PSC. Finally, the study has been progressed to the realization of all-perovskite TSC that can reach the ECE, exceeding 30%. Detailed guidance for the completion of high-performance PSCs is provided.[Figure not available: see fulltext.]
KW - Electrical characteristic
KW - Optics and optimization
KW - Perovskite
KW - Spray pyrolysis deposition
KW - Tandem solar cells
KW - TiO compact layer
UR - http://www.scopus.com/inward/record.url?scp=85098706803&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85098706803&partnerID=8YFLogxK
U2 - 10.1007/s40820-020-00559-2
DO - 10.1007/s40820-020-00559-2
M3 - Article
AN - SCOPUS:85098706803
SN - 2311-6706
VL - 13
JO - Nano-Micro Letters
JF - Nano-Micro Letters
IS - 1
M1 - 36
ER -