Broadband light trapping strategies for quantum-dot photovoltaic cells (>10%) and their issues with the measurement of photovoltaic characteristics

Cited 4 time in webofscience Cited 0 time in scopus
  • Hit : 242
  • Download : 305
Bandgap tunability and broadband absorption make quantum-dot (QD) photovoltaic cells (PVs) a promising candidate for future solar energy conversion systems. Approaches to improving the electrical properties of the active layer increase efficiency in part. The present study focuses on optical room for enhancement in QD PVs over wide spectrum in the near-infrared (NIR) region. We find that ray-optical light trapping schemes rather than the nanophotonics approach may be the best solution for enhancing broadband QD PVs by suppressing the escape probability of internal photons without spectral dependency. Based on the theoretical study of diverse schemes for various bandgaps, we apply a V-groove structure and a V-groove textured compound parabolic trapper (VCPT) to PbS-based QD PVs along with the measurement issues for PVs with a light scattering layer. The efficiency of the best device is improved from 10.3% to 11.0% (certified to 10.8%) by a V-groove structure despite the possibility of underestimation caused by light scattering in small-area devices (aperture area: 0.0625 cm
Publisher
NATURE PUBLISHING GROUP
Issue Date
2017-12
Language
English
Article Type
Article
Keywords

ORGANIC SOLAR-CELLS; EFFICIENCY PERL; PERFORMANCE; DEVICES; SOLIDS; NANOPARTICLES; PASSIVATION; LAYER; LIMIT; FZ

Citation

SCIENTIFIC REPORTS, v.7, no.1, pp.17393

ISSN
2045-2322
DOI
10.1038/s41598-017-17550-4
URI
http://hdl.handle.net/10203/239943
Appears in Collection
EEW-Journal Papers(저널논문)
Files in This Item
s41598-017-17550-4.pdf(4.86 MB)Download
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡ Click to see webofscience_button
⊙ Cited 4 items in WoS Click to see citing articles in records_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0