Dependence of nanocrystal dimensionality on the polymer nanomorphology, anisotropic optical absorption, and carrier transport in P3HT: TiO2 bulk heterojunctions

Chih Cheng Lin, Po Hsun Ho, Chi Liang Huang, Chao Hung Du, Chen Chieh Yu, Hsuen Li Chen, Yun Chieh Yeh, Shao Sian Li, Cheng Kuang Lee, Chun Wei Pao, Ching Pin Chang, Ming Wen Chu, Chun Wei Chen

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

It is known that the nanoscale morphological organization of donors or acceptors in bulk heterojunction (BHJ) solar cells is critical to device performance and strongly affects carrier generation, transporting, and collection. This work demonstrates the dependence of nanocrystal dimensionality and organization on the polymer nanomorphology in P3HT:TiO2 hybrid bulk heterojunctions, which were revealed using grazing-incidence X-ray diffraction (GIXRD) using a synchrotron X-ray beam and electron tomography. We further performed a multiscale molecular dynamic simulation to understand the morphological orientation of a polymer blended with TiO2 nanoparticles (NPs) or nanorods (NRs). The correlation between polymer nanoscale morphology and the dimensionality and anisotropy of nanocrystals in P3HT:TiO2 hybrids clearly explains the observation of different optical absorption and carrier transport behaviors in directions perpendicular or parallel to the film substrate. Our results provide crucial information toward understanding the interplay between nanocrystal dimensionality and polymer morphology in developing organic/inorganic hybrid electronic devices such as thin film transistors (TFTs) or photovoltaics (PVs).

Original languageEnglish
Pages (from-to)25081-25088
Number of pages8
JournalJournal of Physical Chemistry C
Volume116
Issue number47
DOIs
Publication statusPublished - Nov 29 2012
Externally publishedYes

Fingerprint

Carrier transport
Nanocrystals
Light absorption
Heterojunctions
heterojunctions
nanocrystals
Polymers
optical absorption
polymers
Thin film transistors
Synchrotrons
Nanorods
grazing incidence
nanorods
Tomography
Molecular dynamics
Solar cells
synchrotrons
Anisotropy
x rays

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

Cite this

Dependence of nanocrystal dimensionality on the polymer nanomorphology, anisotropic optical absorption, and carrier transport in P3HT : TiO2 bulk heterojunctions. / Lin, Chih Cheng; Ho, Po Hsun; Huang, Chi Liang; Du, Chao Hung; Yu, Chen Chieh; Chen, Hsuen Li; Yeh, Yun Chieh; Li, Shao Sian; Lee, Cheng Kuang; Pao, Chun Wei; Chang, Ching Pin; Chu, Ming Wen; Chen, Chun Wei.

In: Journal of Physical Chemistry C, Vol. 116, No. 47, 29.11.2012, p. 25081-25088.

Research output: Contribution to journalArticle

Lin, CC, Ho, PH, Huang, CL, Du, CH, Yu, CC, Chen, HL, Yeh, YC, Li, SS, Lee, CK, Pao, CW, Chang, CP, Chu, MW & Chen, CW 2012, 'Dependence of nanocrystal dimensionality on the polymer nanomorphology, anisotropic optical absorption, and carrier transport in P3HT: TiO2 bulk heterojunctions', Journal of Physical Chemistry C, vol. 116, no. 47, pp. 25081-25088. https://doi.org/10.1021/jp306921e
Lin, Chih Cheng ; Ho, Po Hsun ; Huang, Chi Liang ; Du, Chao Hung ; Yu, Chen Chieh ; Chen, Hsuen Li ; Yeh, Yun Chieh ; Li, Shao Sian ; Lee, Cheng Kuang ; Pao, Chun Wei ; Chang, Ching Pin ; Chu, Ming Wen ; Chen, Chun Wei. / Dependence of nanocrystal dimensionality on the polymer nanomorphology, anisotropic optical absorption, and carrier transport in P3HT : TiO2 bulk heterojunctions. In: Journal of Physical Chemistry C. 2012 ; Vol. 116, No. 47. pp. 25081-25088.
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