Optimization of Si NC/P3HT hybrid solar cells

Chin Yi Liu, Zachary Holman, Uwe R. Kortshagen

Research output: Contribution to journalArticle

111 Citations (Scopus)

Abstract

Silicon nanocrystals (Si NCs) are shown to be an electron acceptor in hybrid solar cells combining Si NCs with poly(3-hexylthiophene) (P3HT). The effects of annealing and different metal electrodes on Si NC/P3HT hybrid solar cells are studied in this paper. After annealing at 150°C, Si NC/P3HT solar cells exhibit power conversion efficiencies as high as 1.47%. The hole mobility in the P3HT phase extracted from space-charge-limited current measurements of hole-only devices increases from 2.48 X 10 -1 to 1.11 X 10 -9 m 2 V -1 s -1 after annealing, resulting in better transport in the solar cells. A quenching of the open-circuit voltage and short-circuit current is observed when high work function metals are deposited as the cathode on Si NC/P3HT hybrid devices.

Original languageEnglish (US)
Pages (from-to)2157-2164
Number of pages8
JournalAdvanced Functional Materials
Volume20
Issue number13
DOIs
StatePublished - Jul 9 2010
Externally publishedYes

Fingerprint

Solar cells
solar cells
Annealing
Nanocrystals
optimization
annealing
nanocrystals
Hole mobility
Silicon solar cells
Electric current measurement
Open circuit voltage
Metals
Electric space charge
Short circuit currents
Conversion efficiency
Quenching
hole mobility
Cathodes
short circuit currents
open circuit voltage

ASJC Scopus subject areas

  • Biomaterials
  • Electrochemistry
  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Optimization of Si NC/P3HT hybrid solar cells. / Liu, Chin Yi; Holman, Zachary; Kortshagen, Uwe R.

In: Advanced Functional Materials, Vol. 20, No. 13, 09.07.2010, p. 2157-2164.

Research output: Contribution to journalArticle

Liu, Chin Yi ; Holman, Zachary ; Kortshagen, Uwe R. / Optimization of Si NC/P3HT hybrid solar cells. In: Advanced Functional Materials. 2010 ; Vol. 20, No. 13. pp. 2157-2164.
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