Near-infrared sensitive small molecule organic photovoltaic cells based on chloroaluminum phthalocyanine

Rhonda F. Bailey-Salzman, Barry P. Rand, Stephen R. Forrest

Research output: Contribution to journalArticlepeer-review

127 Scopus citations

Abstract

The use of chloroaluminum phthalocyanine (ClAlPc) as a donor and C60 as an acceptor in planar double heterojunction organic photovoltaic cells with response extending into the near infrared is demonstrated. X-ray diffraction indicates that under the conditions used in this study ClAlPc grows as an amorphous film. Although the absorption and film morphology show no dependence on growth rate, device performance is optimized at a growth rate of 0.5 Ås, producing cells whose best performance gives an open circuit voltage of 0.68±0.01 V, a responsivity of 0.062±0.007 AW, a fill factor of 0.50±0.04, and a power conversion efficiency of 2.1±0.1% under simulated AM1.5G, 1 sun intensity illumination. This cell also displays low dark current under reverse bias, 2.4× 10-8 A cm2 at -1 V.

Original languageEnglish (US)
Article number013508
JournalApplied Physics Letters
Volume91
Issue number1
DOIs
StatePublished - Nov 19 2007

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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