Correlation between SiH2/SiH and light-induced degradation of p-i-n hydrogenated amorphous silicon solar cells

Kimitaka Keya, Takashi Kojima, Yoshihiro Torigoe, Susumu Toko, Daisuke Yamashita, Hyunwoong Seo, Naho Itagaki, Kazunori Koga, Masaharu Shiratani

Research output: Contribution to journalArticle

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Abstract

We have measured the hydrogen content ratio I SiH2/I SiH associated with Si-H2 and Si-H bonds in p-i-n (PIN) a-Si:H solar cells by Raman spectroscopy. With decreasing I SiH2/I SiH, the efficiency, short-circuit current density, open-circuit voltage, and fill factor of PIN a-Si:H solar cells after light soaking tend to increase. Namely, I SiH2/I SiH correlates well with light-induced degradation of the cells. While a single I-layer has a low I SiH2/I SiH of 0.03-0.09, a PIN cell has I SiH2/I SiH = 0.18 because many Si-H2 bonds exist in the P-layer and at the P/I interface of the PIN solar cells. To realize PIN solar cells with higher stability, we must suppress Si-H2 bond formation in the P-layer and at the P/I interface.

Original languageEnglish
Article number07LE03
JournalJapanese Journal of Applied Physics
Volume55
Issue number7S2
DOIs
Publication statusPublished - Jan 1 2016

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Silicon solar cells
Amorphous silicon
amorphous silicon
Solar cells
solar cells
degradation
Degradation
soaking
Open circuit voltage
short circuit currents
open circuit voltage
cells
Short circuit currents
Raman spectroscopy
Current density
current density
Hydrogen
hydrogen

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

Correlation between SiH2/SiH and light-induced degradation of p-i-n hydrogenated amorphous silicon solar cells. / Keya, Kimitaka; Kojima, Takashi; Torigoe, Yoshihiro; Toko, Susumu; Yamashita, Daisuke; Seo, Hyunwoong; Itagaki, Naho; Koga, Kazunori; Shiratani, Masaharu.

In: Japanese Journal of Applied Physics, Vol. 55, No. 7S2, 07LE03, 01.01.2016.

Research output: Contribution to journalArticle

Keya, Kimitaka ; Kojima, Takashi ; Torigoe, Yoshihiro ; Toko, Susumu ; Yamashita, Daisuke ; Seo, Hyunwoong ; Itagaki, Naho ; Koga, Kazunori ; Shiratani, Masaharu. / Correlation between SiH2/SiH and light-induced degradation of p-i-n hydrogenated amorphous silicon solar cells. In: Japanese Journal of Applied Physics. 2016 ; Vol. 55, No. 7S2.
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AU - Keya, Kimitaka

AU - Kojima, Takashi

AU - Torigoe, Yoshihiro

AU - Toko, Susumu

AU - Yamashita, Daisuke

AU - Seo, Hyunwoong

AU - Itagaki, Naho

AU - Koga, Kazunori

AU - Shiratani, Masaharu

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