Published January 5, 2015 | Version v1
Journal article Metadata-only

Photovoltaic conversion of visible spectrum by GaP capped InP quantum dots grown on Si (100) by metalorganic chemical vapor deposition

Creators

  • 1. Advanced Technology Development Centre, Indian Institute of Technology, Kharagpur 721 302 (India)
  • 2. Materials Science Centre, Indian Institute of Technology, Kharagpur 721 302 (India)
  • 3. Center for Energy Harvesting Materials and Systems (CEHMS), Virginia Tech, Blacksburg, Virginia 24061 (United States)

Description

Growth of GaP capped strained InP quantum dots was carried out by metal organic chemical vapor deposition technique on Si (100) substrates to explore an alternative material system for photovoltaic conversion. Studies on reflectance spectroscopy show higher absorption of visible photons compared to scattering. Smooth and defect free interface provides low dark current with high rectification ratio. A solar cell made of five periods of quantum dots is found to provide a conversion efficiency of 4.18% with an open circuit voltage and short circuit current density of 0.52 V and 13.64 mA/cm2, respectively, under AM 1.5 solar radiation

Additional details

Identifiers

DOI
10.1063/1.4905345;

Publishing Information

Journal Title
Applied Physics Letters
Journal Volume
106
Journal Issue
1
Journal Page Range
p. 012103-012103.5
ISSN
0003-6951
CODEN
APPLAB

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
46101341
Subject category
S77: NANOSCIENCE AND NANOTECHNOLOGY;
Descriptors DEI
ABSORPTION SPECTROSCOPY; CHEMICAL VAPOR DEPOSITION; COMPARATIVE EVALUATIONS; CRYSTAL STRUCTURE; CURRENT DENSITY; ELECTRIC POTENTIAL; ELECTRICAL FAULTS; GALLIUM PHOSPHIDES; INDIUM PHOSPHIDES; INTERFACES; ORGANOMETALLIC COMPOUNDS; PHOTOVOLTAIC CONVERSION; QUANTUM DOTS; SILICON; SOLAR CELLS; STRAINS; SUBSTRATES; VISIBLE SPECTRA
Descriptors DEC
CHEMICAL COATING; CONVERSION; DEPOSITION; DIRECT ENERGY CONVERSION; DIRECT ENERGY CONVERTERS; ELEMENTS; ENERGY CONVERSION; EQUIPMENT; EVALUATION; GALLIUM COMPOUNDS; INDIUM COMPOUNDS; NANOSTRUCTURES; ORGANIC COMPOUNDS; PHOSPHIDES; PHOSPHORUS COMPOUNDS; PHOTOELECTRIC CELLS; PHOTOVOLTAIC CELLS; PNICTIDES; SEMIMETALS; SOLAR EQUIPMENT; SPECTRA; SPECTROSCOPY; SURFACE COATING

Optional Information

Notes
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