Polymer nanocomposite photovoltaics utilizing CdSe nanocrystals capped with a thermally cleavable solubilizing ligand

Jangwon Seo, Won Jin Kim, Sung Jin Kim, Kwang Sup Lee, A. N. Cartwright, Paras N. Prasad

Research output: Contribution to journalArticle

79 Citations (Scopus)

Abstract

We demonstrate a relative improvement in power conversion efficiency of polymer nanocomposite photovoltaic cells consisting of poly(3-hexylthiophene) (P3HT) functionalized CdSe nanocrystals. Thermal deprotection processing of the tert-buthoxycarbonyl moiety in the carbamate ligand surrounding the surface of CdSe nanocrystal significantly shortened the length of the ligand between nanocrystals and between the nanocrystal and the polymer matrix. The resulting device performance was investigated as a function of the composition ratio of P3HT/CdSe and the heating temperature. This simple and straightforward ligand deprotection strategy resulted in a significant increase in current density due to improvement of charge transport between the constituent materials.

Original languageEnglish
Article number133302
JournalApplied Physics Letters
Volume94
Issue number13
DOIs
StatePublished - Apr 15 2009
Externally publishedYes

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nanocomposites
nanocrystals
ligands
polymers
photovoltaic cells
current density
heating
matrices
temperature

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Polymer nanocomposite photovoltaics utilizing CdSe nanocrystals capped with a thermally cleavable solubilizing ligand. / Seo, Jangwon; Kim, Won Jin; Kim, Sung Jin; Lee, Kwang Sup; Cartwright, A. N.; Prasad, Paras N.

In: Applied Physics Letters, Vol. 94, No. 13, 133302, 15.04.2009.

Research output: Contribution to journalArticle

Seo, Jangwon ; Kim, Won Jin ; Kim, Sung Jin ; Lee, Kwang Sup ; Cartwright, A. N. ; Prasad, Paras N. / Polymer nanocomposite photovoltaics utilizing CdSe nanocrystals capped with a thermally cleavable solubilizing ligand. In: Applied Physics Letters. 2009 ; Vol. 94, No. 13.
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