Characterizing morphology in bulk heterojunction organic photovoltaic systems

Giridharagopal, Rajiv; Ginger, David S.

doi:10.1021/jz100100p

Characterizing morphology in bulk heterojunction organic photovoltaic systems

Journal Article · · Journal of Physical Chemistry Letters

DOI:https://doi.org/10.1021/jz100100p· OSTI ID:1064764

Giridharagopal, Rajiv; Ginger, David S.

Organic semiconductors are an alternative to inorganic materials in solar cell applications. While the efficiencies of organic photovoltaics (OPVs) have been improving rapidly, they are currently below that required for widespread power generation. OPV performance is sensitive to the nanoscale texture, or film morphology, in the photovoltaic active layer, particularly in bulk heterojunction (BHJ) devices, and characterizing morphology across many length scales is currently a major experimental challenge. Here, we discuss several different experimental approaches for characterizing morphology in BHJ systems. These include techniques ranging from X-ray diffraction and spectroscopy to electron microscopy and scanning probe microscopy. These methods provide complementary information to guide future materials design and device optimization efforts.

Research Organization:: Energy Frontier Research Centers (EFRC); Center for Interface Science: Solar Electric Materials (CISSEM)

Sponsoring Organization:: USDOE SC Office of Basic Energy Sciences (SC-22)

DOE Contract Number:: SC0001084

OSTI ID:: 1064764

Journal Information:: Journal of Physical Chemistry Letters, Journal Name: Journal of Physical Chemistry Letters Journal Issue: 7 Vol. 1(7); ISSN 1948-7185

Publisher:: American Chemical Society

Country of Publication:: United States

Language:: English

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14 SOLAR ENERGY
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Characterizing morphology in bulk heterojunction organic photovoltaic systems

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