Impact of heterointerface properties of crystalline germanium heterojunction solar cells

Shinya Nakano, Masaharu Shiratani

Research output: Contribution to journalArticle

Abstract

We have previously reported that phosphine (PH3) surface treatment of a p-type crystalline germanium (c-Ge) substrate improves the c-Ge heterojunction solar cell performance. In this study, the effects of the heterointerface properties of the c-Ge heterojunction solar cell were investigated. We found that the deposition temperature of the heterojunction layer and O2 surface treatment before the PH3 surface treatment influence the interface phase structure and band structure. Consequently, a conversion efficiency of 7.61% with a high open-circuit voltage of 0.270 V was obtained.

Original languageEnglish
Pages (from-to)225-233
Number of pages9
JournalThin Solid Films
Volume685
DOIs
Publication statusPublished - Sep 1 2019

Fingerprint

Germanium
surface treatment
Surface treatment
Heterojunctions
heterojunctions
germanium
Solar cells
phosphine
solar cells
Crystalline materials
Open circuit voltage
Phase structure
open circuit voltage
phosphines
Band structure
Conversion efficiency
high voltages
Substrates
Temperature
temperature

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

Cite this

Impact of heterointerface properties of crystalline germanium heterojunction solar cells. / Nakano, Shinya; Shiratani, Masaharu.

In: Thin Solid Films, Vol. 685, 01.09.2019, p. 225-233.

Research output: Contribution to journalArticle

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