TY - JOUR
T1 - Near field control for enhanced photovoltaic performance and photostability in perovskite solar cells
AU - Hossain, Mohammad Ismail
AU - Shahiduzzaman, Md
AU - Ahmed, Safayet
AU - Huqe, Md Rashedul
AU - Qarony, Wayesh
AU - Saleque, Ahmed Mortuza
AU - Akhtaruzzaman, Md
AU - Knipp, Dietmar
AU - Tsang, Yuen Hong
AU - Taima, Tetsuya
AU - Zapien, Juan Antonio
N1 - Funding Information:
Dr. Wayesh Qarony is working as a Postdoctoral Research Scientist at University of California,Berkeley and LBNL, USA. He is working on the design and fabrication of topological quantum devices, highly efficient and ultrafast photodetectors. He also focuses on perovskite tandem solar cells, perovskites color sensor, and multispectral imagers. He has published > 35 SCI peer-reviewed journal papers with 690+ citations. Dr. Qarony graduated his MSc (EE) and PhD (Applied Physics) from the Jacobs University Bremen,Germany, and Hong Kong Polytechnic University with Hempel Fellowship and HKPFS fellowship, respectively. He also studied Telecommunication Engineering in University of Trento, Italy.
Funding Information:
The research was supported by a grant from the Innovation and Technology Commission of Hong Kong (Project Number: ITS/461/18 ) and the Hong Kong Research Grants Council (RGC) (Project CityU 11210218 ), Hong Kong. This work was also supported by the Research Grants Council of Hong Kong, China (Project number: 152093/18E ). This work is partially supported by the Universiti Kebangsaan Malaysia (project code DIP-2021-026 ), Malaysia. The authors also extended their appreciation to the Grant-in-Aid financially supported this study for Scientific Research Grant Number 20H02838 , Japan.
Publisher Copyright:
© 2021 Elsevier Ltd
PY - 2021/11
Y1 - 2021/11
N2 - We present a strategy for photon management in front contact of perovskite solar cells (PSCs) compatible with tandem and flexible PSCs capable of optimizing device characteristics while providing an additional mechanism to overcome excessive focusing that affects the device's photostability. Rigorous validation of the numerical modeling used was performed by fabricating PSCs in a superstrate configuration optimized to reach high performance, ECE = 17.4%, VOC = 1.02 V, JSC = 22.3 mA/cm2, and FF = 77%. These 3D electromagnetic simulations combining the finite-difference time-domain (FDTD) and finite element method (FEM) techniques provide detailed insights of the photonic and electrical effects in PSCs. Numerical optimization of the dual capabilities of a novel nanostructured front contact enables control of the absorbed power density distribution to maximize efficiency while simultaneously minimizing nanostructure-related sub-wavelength focusing effects. In-depth analysis of the proposed photon management reveals enhanced electrical characteristics to maximize charge extraction leading to JSC enhancements of ~15 that can be as high as 33% for ultra-thin active layers suitable for flexible PSCs compared to planar PSCs performance. Furthermore, we show that the design of the front contact layer's nanostructure enables control of the power density distribution in the device to engineer PSCs' photostability without compromising performance enhancements afforded by the nanophotonic front contact. Details of the nanophotonic front contact, device, and fabrication process are provided.
AB - We present a strategy for photon management in front contact of perovskite solar cells (PSCs) compatible with tandem and flexible PSCs capable of optimizing device characteristics while providing an additional mechanism to overcome excessive focusing that affects the device's photostability. Rigorous validation of the numerical modeling used was performed by fabricating PSCs in a superstrate configuration optimized to reach high performance, ECE = 17.4%, VOC = 1.02 V, JSC = 22.3 mA/cm2, and FF = 77%. These 3D electromagnetic simulations combining the finite-difference time-domain (FDTD) and finite element method (FEM) techniques provide detailed insights of the photonic and electrical effects in PSCs. Numerical optimization of the dual capabilities of a novel nanostructured front contact enables control of the absorbed power density distribution to maximize efficiency while simultaneously minimizing nanostructure-related sub-wavelength focusing effects. In-depth analysis of the proposed photon management reveals enhanced electrical characteristics to maximize charge extraction leading to JSC enhancements of ~15 that can be as high as 33% for ultra-thin active layers suitable for flexible PSCs compared to planar PSCs performance. Furthermore, we show that the design of the front contact layer's nanostructure enables control of the power density distribution in the device to engineer PSCs' photostability without compromising performance enhancements afforded by the nanophotonic front contact. Details of the nanophotonic front contact, device, and fabrication process are provided.
KW - FDTD and FEM techniques
KW - Metal-oxide
KW - Nanostructured front contact
KW - Perovskite solar cells
KW - Photostability
UR - http://www.scopus.com/inward/record.url?scp=85111840849&partnerID=8YFLogxK
U2 - 10.1016/j.nanoen.2021.106388
DO - 10.1016/j.nanoen.2021.106388
M3 - Journal article
AN - SCOPUS:85111840849
SN - 2211-2855
VL - 89
JO - Nano Energy
JF - Nano Energy
M1 - 106388
ER -
