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Title: Transparent conductor-embedding nanolens for Si solar cells

We present a large-scale applicable nanolens-embedding solar cell. An electrically conductive and optically transparent indium-tin-oxide (ITO) thin film was coated on a Si substrate. After then, periodically patterned ITO nanodome-arrays were formed on the ITO film by using a nano-imprint method. This structure is effective to reduce the incident light reflection for broad wavelengths and also efficient to drive the incident photons into a light-absorbing Si substrate. There exist two electric fields. One is by a p/n junction and the other is by the light absorption into Si. We designed nanolens structures to overlap two electric fields and demonstrate highly improved solar cell performances of current and voltage values from a planar structure.
Authors:
; ; ;  [1] ;  [2] ; ;  [3] ; ; ;  [4] ;  [5]
  1. Department of Electrical Engineering, Incheon National University, Incheon 406772 (Korea, Republic of)
  2. Applied Device and Material Lab., Device Technology Division, Korea Advanced Nano Fab Center (KANC), Suwon 443270 (Korea, Republic of)
  3. Department of Physics, Ewha Womans University, Seoul 120750 (Korea, Republic of)
  4. College of Information and Communication Engineering, Sungkyunkwan University, Suwon 440746 (Korea, Republic of)
  5. Applied Optics and Energy Research Group, Korea Institute of Industrial Technology, Gwangju 500480 (Korea, Republic of)
Publication Date:
OSTI Identifier:
22398892
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 106; Journal Issue: 15; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ABSORPTION; ELECTRIC FIELDS; ELECTRIC POTENTIAL; INDIUM COMPOUNDS; PERFORMANCE; PERIODICITY; PHOTONS; P-N JUNCTIONS; REFLECTION; SILICON; SOLAR CELLS; SUBSTRATES; THIN FILMS; TIN OXIDES; VISIBLE RADIATION