Back-Contact Interdigitated Carrier-Selective Cell: Numerical Demonstration of 30 mW/cm<inline-formula> <tex-math notation="LaTeX">$^\text{2}$</tex-math> </inline-formula> Output Power Density in Standard Albedo Condition

Takaya Sugiura, Nobuhiko Nakano

Research output: Contribution to journalArticlepeer-review

Abstract

This brief proposes a new crystalline-Si (c-Si) solar cell structure, based on bifacial back-contact and carrier-selective contact solar cell technology. The proposed device, known as back-contact interdigitated carrier selective (BICS), offers the advantage of using existing c-Si solar cell structures. The bifaciality provided by the passivated emitter and rear cell (PERC), back-contact provided by interdigitated back contact (IBC), and carrier-selective contact provided by tunnel oxide passivated contact (TOPCon) are featured simultaneously. The local and full TOPCons are, respectively, applied to the emitter and back surface field (BSF) region. The proposed device has an output density of over 30 mW/cm<inline-formula> <tex-math notation="LaTeX">$^\text{2}$</tex-math> </inline-formula> under standard conditions&#x2014;room temperature with a 20% albedo condition. A comparison with our previously proposed bifacial solar cell, heterojunction back contact (HBC)<inline-formula> <tex-math notation="LaTeX">$+$</tex-math> </inline-formula>, reveals the advantages of the proposed device. The proposed device is operable under a relatively low temperature under 45 <inline-formula> <tex-math notation="LaTeX">$^\circ$</tex-math> </inline-formula>C, whereas HBC<inline-formula> <tex-math notation="LaTeX">$+$</tex-math> </inline-formula> is suitable for higher temperatures. Therefore, the choice between the proposed device and HBC<inline-formula> <tex-math notation="LaTeX">$+$</tex-math> </inline-formula> should be based on the climate of the installation location.

Original languageEnglish
Pages (from-to)1-4
Number of pages4
JournalIEEE Transactions on Electron Devices
DOIs
Publication statusAccepted/In press - 2022

Keywords

  • Carrier tunnel
  • device simulation
  • solar cell

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

Fingerprint

Dive into the research topics of 'Back-Contact Interdigitated Carrier-Selective Cell: Numerical Demonstration of 30 mW/cm<inline-formula> <tex-math notation="LaTeX">$^\text{2}$</tex-math> </inline-formula> Output Power Density in Standard Albedo Condition'. Together they form a unique fingerprint.

Cite this