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Title Nanoscale measurements of the surface photovoltage in Cu(In,Ga)Se2, Cu2ZnSn4, and Cu2ZnSnSe4 thin films [electronic resource] : the role of the surface electronics on the efficiency of solar cells : preprint / H. Du ... [et al.].

Imprint Golden, CO : National Renewable Energy Laboratory, [2011]


Location Call No. OPAC Message Status
 Axe Federal Documents Online  E 9.17:NREL/CP-5200-50711    ---  Available
Description 1 online resource (4 p.) : ill.
Series NREL/CP ; 5200-50711
Conference paper (National Renewable Energy Laboratory (U.S.)) ; 5200-50711.
Note Title from title screen (viewed August 29, 2011).
"July 2011."
"Presented at the 37th IEEE Photovoltaic Specialists Conference (PVSC 37) Seattle, Washington June 19-24, 2011."
"Conference paper."
Summary We report on recent advances in the development of nanoscale measurements of the surface photovoltage (SPV) based on scanning tunneling microscopy (STM) and its application to the kesterites Cu2ZnSnS4 (CZTS) and Cu2ZnSnSe4 (CZTSe). One critical aspect of the electronic structure of Cu(In,Ga)Se2 (CIGS) that has yet to be determined in their related kesterite compounds is the character of the surface electronics. In CIGS, spontaneous deviations in the stoichiometry of the surface cause a depletion (or even a type inversion) region that reinforces the CIGS homojunction. First-principle calculations predict that this inversion region will be more difficult to form in CZTS. In this contribution, the characteristics of the surface space charge region for both CIGS and CZTS(e) are investigated by STM. The implications of the results of these measurements on the future development of CZTS solar cells will be discussed.
Bibliography Includes bibliographical references (p. 4).
Note "Contract no. DE-AC36-08GO28308."
Subject Photovoltaic power generation -- Research.
Solar cells -- Research.
Thin films -- Surfaces.
Scanning tunneling microscopy.
Added Author Du, Hui.
National Renewable Energy Laboratory (U.S.)
IEEE Photovoltaic Specialists Conference (37th : 2011 : Seattle, Wash.)
Added Title Role of the surface electronics on the efficiency of solar cells : preprint
Gpo Item No. 0430-P-04 (online)
Sudoc No. E 9.17:NREL/CP-5200-50711

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