Structural templating of multiple polycrystalline layers in organic photovoltaic cells

Brian E. Lassiter, Richard R. Lunt, C. Kyle Renshaw, Stephen R. Forrest

Research output: Contribution to journalArticle

  • 22 Citations

Abstract

We demonstrate that organic photovoltaic cell performance is influenced by changes in the crystalline orientation of composite layer structures. A 1.5 nm thick self-organized, polycrystalline template layer of 3,4,9,10- perylenetetracarboxylic dianhydride (PTCDA) orients subsequently deposited layers of a diindenoperylene exciton blocking layer, and the donor, copper phthalocyanine (CuPc). Control over the crystalline orientation of the CuPc leads to changes in its frontier energy levels, absorption coefficient, and surface morphology, resulting in an increase of power conversion efficiency at 1 sun from 1.42 ± 0.04% to 2.19 ± 0.05% for a planar heterojunction and from 1.89 ± 0.05% to 2.49 ± 0.03% for a planar-mixed heterojunction.

Original languageEnglish (US)
JournalOptics Express
Volume18
Issue number19
StatePublished - Sep 13 2010
Externally publishedYes

Profile

photovoltaic cells
heterojunctions
absorptivity
sun
templates
energy levels
excitons
copper
composite materials

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Structural templating of multiple polycrystalline layers in organic photovoltaic cells. / Lassiter, Brian E.; Lunt, Richard R.; Renshaw, C. Kyle; Forrest, Stephen R.

In: Optics Express, Vol. 18, No. 19, 13.09.2010.

Research output: Contribution to journalArticle

Lassiter, Brian E.; Lunt, Richard R.; Renshaw, C. Kyle; Forrest, Stephen R. / Structural templating of multiple polycrystalline layers in organic photovoltaic cells.

In: Optics Express, Vol. 18, No. 19, 13.09.2010.

Research output: Contribution to journalArticle

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