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Intensity and temperature dependent characterization of eta solar cell
Author(s) -
Musembi Robinson J.,
Rusu Marin,
Mwabora Julius M.,
Aduda Bernard O.,
Fostiropoulos Konstantinos,
LuxSteiner Martha Ch.
Publication year - 2008
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.200723466
Subject(s) - solar cell , atmospheric temperature range , band diagram , pedot:pss , quantum tunnelling , characterization (materials science) , diode , materials science , optoelectronics , range (aeronautics) , quantum efficiency , intensity (physics) , recombination , chemistry , analytical chemistry (journal) , optics , physics , band gap , electrode , nanotechnology , thermodynamics , biochemistry , chromatography , gene , composite material
Temperature‐dependent electrical characterization of a highly structured TiO 2 /In(OH) x S y /Pb(OH) x S y /PEDOT:PSS eta solar cell has been carried out. The transport mechanism in this type of solar cell has been investigated. A schematic energy band diagram which explains the photoelectrical properties of the device has been proposed. The solar cell has been characterized in the temperature range 200–320 K at illumination intensities between 0.05 mW/cm 2 and 100 mW/cm 2 . The diode ideality factor A under illumination has been found to vary between 1.2 and 1.6, whereas in the dark 6.9 ≤ A ≤ 10.1. The device has been found to undergo a thermally activated recombination under illumination, while tunnelling enhanced recombination has been established to dominate the current in the dark. The solar cell efficiency shows a logarithmic dependence on illumination in the whole temperature range investigated, achieving its maximum at an illumination of ∼45 mW/cm 2 . (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)