Journal
PHYSICAL REVIEW B
Volume 82, Issue 7, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.82.073407
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Funding
- National Science Foundation [DMR-05-2047]
- Surface Analytical Chemistry Program [CHE0750203]
- Direct For Mathematical & Physical Scien
- Division Of Chemistry [0750203] Funding Source: National Science Foundation
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The ultrafast dynamics at a well-characterized CuPc/C-60 organic photovoltaic heterojunction have been directly measured with time-resolved two-photon photoemission (TR-2PPE). Phthalocyanine/C-60 donor-acceptor interfaces, characterized in detail via scanning tunneling microscopy, provide model systems for studies of critical charge separation and recombination processes that determine device performance. TR-2PPE studies of copper phthalocyanine (CuPc)/C-60 interfaces reveal ultrafast charge separation and provide evidence for recombination via low-lying CuPc triplet levels.
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