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Seo, Kwanyong
The SEO Group
Research Interests
  • Flexible solar cell, transparent solar cell, PV-battery hybrid system, hetero-junction solar cell


Dopant-free All-back-contact Si Nanohole Solar Cells using MoOx and LiF Films

DC Field Value Language Um, Han-Don ko Kim, Namwoo ko Lee, Kangmin ko Hwang, Inchan ko Seo, Ji Hoon ko Seo, Kwanyong ko 2016-01-19T08:45:57Z - 2016-01-15 ko 2016-02 ko
dc.identifier.citation NANO LETTERS, v.16, no.2, pp.981 - 987 ko
dc.identifier.issn 1530-6984 ko
dc.identifier.uri -
dc.description.abstract We demonstrate novel all-back-contact Si nanohole solar cells via the simple direct deposition of molybdenum oxide (MoOx) and lithium fluoride (LiF) thin films as dopant-free and selective carrier contacts (SCCs). This approach is in contrast to conventionally used high-temperature thermal doping processes, which require multistep patterning processes to produce diffusion masks. Both MoOx and LiF thin films are inserted between the Si absorber and Al electrodes interdigitatedly at the rear cell surfaces, facilitating effective carrier collection at the MoOx/Si interface and suppressed recombination at the Si and LiF/Al electrode interface. With optimized MoOx and LiF film thickness as well as the all-back-contact design, our 1-cm2 Si nanohole solar cells exhibit a conversion efficiency of up to 15.4 %, with an open-circuit voltage of 561 mV and a fill factor of 74.6 %. In particular, because of the significant reduction in Auger/surface recombination as well as the excellent Si-nanohole light absorption, our solar cells exhibit an external quantum efficiency of 83.4 % for short-wavelength light (~400 nm), resulting in a dramatic improvement (54.6%) in the short-circuit current density (36.8 mA/cm2) compared to that of a planar cell (23.8 mA/cm2). Hence, our all-back-contact design using MoOx and LiF films formed by a simple deposition process presents a unique opportunity to develop highly efficient and low-cost Si nanostructured solar cells. ko
dc.description.statementofresponsibility close -
dc.language 영어 ko
dc.publisher AMER CHEMICAL SOC ko
dc.title Dopant-free All-back-contact Si Nanohole Solar Cells using MoOx and LiF Films ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-84958166966 ko
dc.identifier.wosid 000370215200024 ko
dc.type.rims ART ko
dc.identifier.doi 10.1021/acs.nanolett.5b03955 ko
dc.identifier.url ko
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