Hybrid effects of CdSe/ZnS quantum dots on p-n heterojunction organic nanowire

Seok Ho Lee, Hyunsoo Lee, Sung Yeoun Park, Kihyun Kim, Yong Baek Lee, Jeongyong Kim, Kwang Sup Lee, Jinsoo Joo

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

We demonstrate that the optical and photoresponsive electrical properties of a single nanowire (NW) consisting of a p-type poly(3-hexylthiophene) (P3HT) and n-type [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) were changed by hybridization with functionalized CdSe/ZnS QDs. Surface decorating and bulky infiltrating methods were employed for the hybridization of the QDs with the NWs. For the QD-infiltrated P3HT/PCBM single NW, the current density in both dark and light conditions was clearly enhanced and the nanoscale photoluminescence (PL) intensity was reduced due to the charge transfer effect. For the P3HT/PCBM NWs decorated with QDs, the current density was not changed much, however, the PL characteristics of both the QDs and the NWs were simultaneously changed by the energy transfer effect. From time-resolved PL spectra, the exciton lifetimes of the QDs in the hybrid NWs drastically decreased through the hybridization with the NWs, supporting the charge and/or energy transfer effects.

Original languageEnglish
Pages (from-to)1-6
Number of pages6
JournalSynthetic Metals
Volume163
Issue number1
DOIs
Publication statusPublished - 2013 Jan 21

Fingerprint

Butyric acid
butyric acid
Semiconductor quantum dots
Nanowires
Heterojunctions
heterojunctions
esters
Esters
Photoluminescence
nanowires
Butyric Acid
quantum dots
photoluminescence
Energy transfer
Current density
energy transfer
current density
Excitons
Charge transfer
Electric properties

Keywords

  • Charge transfer
  • Energy transfer
  • Heterojunction nanowire
  • Poly(3-hexylthiophene)
  • Quantum dots

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Chemistry
  • Metals and Alloys
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Hybrid effects of CdSe/ZnS quantum dots on p-n heterojunction organic nanowire. / Lee, Seok Ho; Lee, Hyunsoo; Park, Sung Yeoun; Kim, Kihyun; Lee, Yong Baek; Kim, Jeongyong; Lee, Kwang Sup; Joo, Jinsoo.

In: Synthetic Metals, Vol. 163, No. 1, 21.01.2013, p. 1-6.

Research output: Contribution to journalArticle

Lee, Seok Ho ; Lee, Hyunsoo ; Park, Sung Yeoun ; Kim, Kihyun ; Lee, Yong Baek ; Kim, Jeongyong ; Lee, Kwang Sup ; Joo, Jinsoo. / Hybrid effects of CdSe/ZnS quantum dots on p-n heterojunction organic nanowire. In: Synthetic Metals. 2013 ; Vol. 163, No. 1. pp. 1-6.
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