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2016 ; 6
(6
): ä Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Improving the Photocurrent in Quantum-Dot-Sensitized Solar Cells by Employing
Alloy Pb(x)Cd(1-x)S Quantum Dots as Photosensitizers
#MMPMID28335226
Yuan C
; Li L
; Huang J
; Ning Z
; Sun L
; Ågren H
Nanomaterials (Basel)
2016[May]; 6
(6
): ä PMID28335226
show ga
Ternary alloy Pb(x)Cd(1-x)S quantum dots (QDs) were explored as photosensitizers
for quantum-dot-sensitized solar cells (QDSCs). Alloy Pb(x)Cd(1-x)S QDs
(Pb(0.54)Cd(0.46)S, Pb(0.31)Cd(0.69)S, and Pb(0.24)Cd(0.76)S) were found to
substantially improve the photocurrent of the solar cells compared to the single
CdS or PbS QDs. Moreover, it was found that the photocurrent increases and the
photovoltage decreases when the ratio of Pb in Pb(x)Cd(1-x)S is increased.
Without surface protecting layer deposition, the highest short-circuit current
density reaches 20 mA/cm² under simulated AM 1.5 illumination (100 mW/cm²). After
an additional CdS coating layer was deposited onto the Pb(x)Cd(1-x)S electrode,
the photovoltaic performance further improved, with a photocurrent of 22.6 mA/cm²
and an efficiency of 3.2%.