Affiliation:
1. Department of Mechanical Engineering National University of Singapore 9 Engineering Drive 1 Singapore 117575 Singapore
2. Solar Energy Research Institute of Singapore (SERIS) National University of Singapore 7 Engineering Drive 1 Singapore 117574 Singapore
3. Department of Chemical and Biomolecular Engineering National University of Singapore 4 Engineering Drive 4 Singapore 117585 Singapore
4. Laboratory for Thin Films and Photovoltaics Empa Swiss Federal Laboratories for Materials Science and Technology Ueberlandstrasse 129 8600 Duebendorf Switzerland
Abstract
Opto‐electronic models that seek to predict the performance of perovskite and tandem solar cells (PSCs/TSCs) often keep the optical and recombination parameters (ORPs) constant in subsequent studies. During fabrication of PSCs, however, these parameters can vary significantly. To account for the inherent fabrication variability, a comprehensive opto‐electronic‐electric model to predict the current–voltage characteristics of four‐terminal (4T) TSCs is developed. This model is calibrated with forty‐eight in‐house fabricated transparent PSCs with perovskite layer thickness of 420, 550, and 700 nm and corresponding median efficiencies of 20.6%, 21.1%, and 21.0%, respectively; a CIS bottom cell with stand‐alone efficiency of 17.5%; and combined 4T TSCs with a median efficiency of 29.0%. After fitting and validation, the functional forms of the ORPs are captured to estimate how they change with perovskite layer thickness. Finally, the errors with models assuming constant ORPs are demonstrated and how to improve the TSCs efficiency to more than 30% is discussed.
Funder
Energy Market Authority of Singapore
Economic Development Board - Singapore
Subject
Electrical and Electronic Engineering,Energy Engineering and Power Technology,Atomic and Molecular Physics, and Optics,Electronic, Optical and Magnetic Materials
Cited by
2 articles.
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