Abstract

Combined perovskite/crystalline-silicon four-terminal tandem solar cells promise >30% efficiencies. Here we propose all-thin-film double-junction architectures where high-bandgap perovskite top cells are coupled to ultrathin c-Si bottom cells enhanced with light trapping. A complete optoelectronic model of the devices was developed and applied to determine the optimal intermediate layers, which are paramount to maximize the cells' photocurrent. It was ascertained that by replacing the transparent conductive oxides by grid-based metallic contacts in the intermediate positions, the parasitic absorption is lowered by 30%. Overall, a 29.2% efficiency is determined for ∼2 um thick tandems composed of the optimized interlayers and improved with Lambertian light trapping.

Original languageEnglish
Pages (from-to)3979-3985
Number of pages7
JournalACS Applied Energy Materials
Volume2
Issue number6
DOIs
Publication statusPublished - 24 Jun 2019

Fingerprint

Perovskite
Thin films
Silicon
Photocurrents
Optoelectronic devices
Oxides
Solar cells
Energy gap
Crystalline materials
perovskite

Keywords

  • four-terminal double-junction solar cells
  • light trapping
  • perovskite/Si tandems
  • photovoltaics
  • transparent contacts

Cite this

@article{2c9f58394efc485b800dc9e84d03ef0a,
title = "All-Thin-Film Perovskite/C-Si Four-Terminal Tandems: Interlayer and Intermediate Contacts Optimization",
abstract = "Combined perovskite/crystalline-silicon four-terminal tandem solar cells promise >30{\%} efficiencies. Here we propose all-thin-film double-junction architectures where high-bandgap perovskite top cells are coupled to ultrathin c-Si bottom cells enhanced with light trapping. A complete optoelectronic model of the devices was developed and applied to determine the optimal intermediate layers, which are paramount to maximize the cells' photocurrent. It was ascertained that by replacing the transparent conductive oxides by grid-based metallic contacts in the intermediate positions, the parasitic absorption is lowered by 30{\%}. Overall, a 29.2{\%} efficiency is determined for ∼2 um thick tandems composed of the optimized interlayers and improved with Lambertian light trapping.",
keywords = "four-terminal double-junction solar cells, light trapping, perovskite/Si tandems, photovoltaics, transparent contacts",
author = "Manuel Chapa and Alexandre, {Miguel F.} and Mendes, {Manuel J.} and Hugo {\'A}guas and Elvira Fortunato and Rodrigo Martins",
note = "This work was funded by FEDER funds, through the COMPETE 2020 Program, and national funds, through the Portuguese Foundation for Science and Technology (FCTMEC), under Projects POCI-01-0145-FEDER-007688 (Reference UID/CTM/50025), ALTALUZ (Reference PTDC/CTM-ENE/5125/2014), SuperSolar (PTDC/NAN-OPT/28430/2017), and TACIT (PTDC/NAN-OPT/28837/2017). M.J.M. acknowledges funding by FCT-MEC through Grant SERH/BPD/115566/2016.",
year = "2019",
month = "6",
day = "24",
doi = "10.1021/acsaem.9b00354",
language = "English",
volume = "2",
pages = "3979--3985",
journal = "ACS Applied Energy Materials",
issn = "2574-0962",
publisher = "American Chemical Society",
number = "6",

}

TY - JOUR

T1 - All-Thin-Film Perovskite/C-Si Four-Terminal Tandems: Interlayer and Intermediate Contacts Optimization

AU - Chapa, Manuel

AU - Alexandre, Miguel F.

AU - Mendes, Manuel J.

AU - Águas, Hugo

AU - Fortunato, Elvira

AU - Martins, Rodrigo

N1 - This work was funded by FEDER funds, through the COMPETE 2020 Program, and national funds, through the Portuguese Foundation for Science and Technology (FCTMEC), under Projects POCI-01-0145-FEDER-007688 (Reference UID/CTM/50025), ALTALUZ (Reference PTDC/CTM-ENE/5125/2014), SuperSolar (PTDC/NAN-OPT/28430/2017), and TACIT (PTDC/NAN-OPT/28837/2017). M.J.M. acknowledges funding by FCT-MEC through Grant SERH/BPD/115566/2016.

PY - 2019/6/24

Y1 - 2019/6/24

N2 - Combined perovskite/crystalline-silicon four-terminal tandem solar cells promise >30% efficiencies. Here we propose all-thin-film double-junction architectures where high-bandgap perovskite top cells are coupled to ultrathin c-Si bottom cells enhanced with light trapping. A complete optoelectronic model of the devices was developed and applied to determine the optimal intermediate layers, which are paramount to maximize the cells' photocurrent. It was ascertained that by replacing the transparent conductive oxides by grid-based metallic contacts in the intermediate positions, the parasitic absorption is lowered by 30%. Overall, a 29.2% efficiency is determined for ∼2 um thick tandems composed of the optimized interlayers and improved with Lambertian light trapping.

AB - Combined perovskite/crystalline-silicon four-terminal tandem solar cells promise >30% efficiencies. Here we propose all-thin-film double-junction architectures where high-bandgap perovskite top cells are coupled to ultrathin c-Si bottom cells enhanced with light trapping. A complete optoelectronic model of the devices was developed and applied to determine the optimal intermediate layers, which are paramount to maximize the cells' photocurrent. It was ascertained that by replacing the transparent conductive oxides by grid-based metallic contacts in the intermediate positions, the parasitic absorption is lowered by 30%. Overall, a 29.2% efficiency is determined for ∼2 um thick tandems composed of the optimized interlayers and improved with Lambertian light trapping.

KW - four-terminal double-junction solar cells

KW - light trapping

KW - perovskite/Si tandems

KW - photovoltaics

KW - transparent contacts

UR - http://www.scopus.com/inward/record.url?scp=85067055276&partnerID=8YFLogxK

U2 - 10.1021/acsaem.9b00354

DO - 10.1021/acsaem.9b00354

M3 - Article

VL - 2

SP - 3979

EP - 3985

JO - ACS Applied Energy Materials

JF - ACS Applied Energy Materials

SN - 2574-0962

IS - 6

ER -