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Title: Formation of BaSi{sub 2} heterojunction solar cells using transparent MoO{sub x} hole transport layers

Heterojunction solar cells that consist of 15 nm thick molybdenum trioxide (MoO{sub x}, x < 3) as a hole transport layer and 600 nm thick unpassivated or passivated n-BaSi{sub 2} layers were demonstrated. Rectifying current-voltage characteristics were observed when the surface of BaSi{sub 2} was exposed to air. When the exposure time was decreased to 1 min, an open circuit voltage of 200 mV and a short circuit current density of 0.5 mA/cm{sup 2} were obtained under AM1.5 illumination. The photocurrent density under a reverse bias voltage of −1 V reached 25 mA/cm{sup 2}, which demonstrates the significant potential of BaSi{sub 2} for solar cell applications.
Authors:
; ; ; ;  [1] ;  [2] ;  [3] ;  [4] ;  [1] ;  [4]
  1. Institute of Applied Physics, University of Tsukuba, 1-1-1 Tennohdai, Tsukuba, Ibaraki 305-8573 (Japan)
  2. Center for Crystal Science and Technology, University of Yamanashi, Yamanashi 400-8511 (Japan)
  3. Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603 (Japan)
  4. (Japan)
Publication Date:
OSTI Identifier:
22398773
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 106; Journal Issue: 12; 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; BARIUM COMPOUNDS; CONCENTRATION RATIO; CURRENT DENSITY; ELECTRIC CURRENTS; ELECTRIC POTENTIAL; ELECTRICAL FAULTS; HETEROJUNCTIONS; HOLES; ILLUMINANCE; LAYERS; MOLYBDENUM OXIDES; SILICIDES; SOLAR CELLS; SURFACES