Single nanoparticle of organic p-type and n-type hybrid materials

Nanoscale phase separation and photovoltaic effect

Yong Baek Lee, Seok Ho Lee, Kihyun Kim, Jin Woo Lee, Kyung Yeon Han, Jeongyong Kim, Jinsoo Joo

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

We fabricated hybrid nanoparticles (NPs) of p-type poly(3-hexylthiophene) (P3HT) and n-type fullerene derivative {[6,6]-phenyl C 61-butyric acid methyl ester (PCBM)} materials through a mini-emulsion method. The nanoscale photoluminescence (PL) characteristics of the non-annealed and annealed hybrid single NPs with different concentrations of P3HT and PCBM were investigated using a laser confocal microscope (LCM) with high spatial resolution. The luminescence characteristics corresponding to the P3HT and PCBM materials were observed simultaneously in the LCM PL spectra for P3HT/PCBM hybrid NP after the annealing process. We propose that the annealing process for the hybrid NPs assisted the ordering of P3HT main chains and the formation of PCBM domains through the gathering of the molecules, indicating nanoscale phase separation. This was supported by UV-Vis absorption and Raman spectroscopy results. Conducting atomic force microscope experiments on an annealed hybrid single NP allowed for the measurement of the characteristic photoresponsive current-voltage curves, and monochromatic photovoltaic characteristics and the avalanche photodiode effect were observed in the low- and high-bias regions, respectively.

Original languageEnglish
Pages (from-to)2485-2490
Number of pages6
JournalJournal of Materials Chemistry
Volume22
Issue number6
DOIs
Publication statusPublished - 2012 Feb 14

Fingerprint

Photovoltaic effects
Butyric acid
Butyric Acid
Hybrid materials
Phase separation
Esters
Nanoparticles
Microscopes
Photoluminescence
Annealing
Fullerenes
Avalanche photodiodes
Lasers
Current voltage characteristics
Emulsions
Ultraviolet spectroscopy
Absorption spectroscopy
Raman spectroscopy
Luminescence
poly(3-hexylthiophene)

ASJC Scopus subject areas

  • Materials Chemistry
  • Chemistry(all)

Cite this

Single nanoparticle of organic p-type and n-type hybrid materials : Nanoscale phase separation and photovoltaic effect. / Lee, Yong Baek; Lee, Seok Ho; Kim, Kihyun; Lee, Jin Woo; Han, Kyung Yeon; Kim, Jeongyong; Joo, Jinsoo.

In: Journal of Materials Chemistry, Vol. 22, No. 6, 14.02.2012, p. 2485-2490.

Research output: Contribution to journalArticle

Lee, Yong Baek ; Lee, Seok Ho ; Kim, Kihyun ; Lee, Jin Woo ; Han, Kyung Yeon ; Kim, Jeongyong ; Joo, Jinsoo. / Single nanoparticle of organic p-type and n-type hybrid materials : Nanoscale phase separation and photovoltaic effect. In: Journal of Materials Chemistry. 2012 ; Vol. 22, No. 6. pp. 2485-2490.
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