Title
Crystalline silicon solar cells with thin poly-SiOx carrier-selective passivating contacts for perovskite/c-Si tandem applications
Author
Singh, M.
Datta, K.
Amarnath, A.
Wagner, F.
Zhao, Y.
Yang, G.
Bracesco, A.
Phung, N.
Zhang, D.
Zardetto, V.
Najafi, M.
Veenstra, S.C.
Coletti, G.
Mazzarella, L.
Creatore, M.
Wienk, M.M.
Janssen, R.A.J.
Weeber, A.W.
Zeman, M.
Isabella, O.
Publication year
2023
Abstract
Single junction crystalline silicon (c-Si) solar cells are reaching their practical efficiency limit whereas perovskite/c-Si tandem solar cells have achieved efficiencies above the theoretical limit of single junction c-Si solar cells. Next to low-thermal budget silicon heterojunction architecture, high-thermal budget carrier-selective passivating contacts (CSPCs) based on polycrystalline-SiOx (poly-SiOx) also constitute a promising architecture for high efficiency perovskite/c-Si tandem solar cells. In this work, we present the development of c-Si bottom cells based on high temperature poly-SiOx CSPCs and demonstrate novel high efficiency four-terminal (4T) and two-terminal (2T) perovskite/c-Si tandem solar cells. First, we tuned the ultra-thin, thermally grown SiOx. Then we optimized the passivation properties of p-type and n-type doped poly-SiOx CSPCs. Here, we have optimized the p-type doped poly-SiOx CSPC on textured interfaces via a two-step annealing process. Finally, we integrated such bottom solar cells in both 4T and 2T tandems, achieving 28.1% and 23.2% conversion efficiency, respectively.
Subject
Budget control
Conversion efficiency
Crystallinity
Heterojunctions
Passivation
Perovskite solar cells
Polycrystalline materials
Silicon compounds
Silicon solar cells
Textures
Crystalline silicon solar cells
Crystalline silicons
Higher efficiency
P-type
Photovoltaics
Polycrystalline
Research and application
Single junction
SiO x
Tandem solar cells
To reference this document use:
http://resolver.tudelft.nl/uuid:861a502c-04d2-4038-b294-0f6735e65d55
DOI
https://doi.org/10.1002/pip.3693
TNO identifier
985323
Publisher
John Wiley and Sons Ltd
ISSN
1062-7995
Source
Progress in Photovoltaics: Research and Applications
Document type
article