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Triplication of the photocurrent in dye solar cells by increasing the elongation of the π-conjugation in Zn-porphyrin sensitizers
(Wiley-VCH Verlag Berlin, 2011)
Porphyrins are promising sensitizers for dye solar cells (DSCs) but narrow absorption bands at 400-450 and 500-650 nm limit their light-harvesting properties. Increasing elongation of the π-conjugation and loss of symmetry ...
Dilemmas of dye-sensitized solar cells
(Wiley-VCH Verlag Berlin, 2011)
Ferrocene to the rescue: The dye-sensitized solar cell allows changes in the energetics of electron transport, molecular absorbers, and hole transport materials to better harvest the energy of solar photons (see picture). ...
Series resistance in organic bulk-heterojunction solar devices: Modulating carrier transport with fullerene electron traps
(Elsevier, 2012)
Series resistance is one of the key parameters affecting the performance of organic photovoltaic devices. Several electronic mechanisms arising from different structures within the solar cell can contribute to increasing ...
Inductive and Capacitive Hysteresis of Halide Perovskite Solar Cells and Memristors Under Illumination
(Frontiers Media, 2022)
The current–voltage curves of memristors exhibit significant hysteresis effects of use for
information storage and computing. Here, we provide a comparison of different devices
based on MAPbI3 perovskite with different ...
A Frequency Domain Analysis of the Excitability and Bifurcations of the FitzHugh–Nagumo Neuron Model
(American Chemical Society, 2021-11-18)
The dynamics of neurons consist of oscillating patterns of a membrane potential
that underpin the operation of biological intelligence. The FitzHugh−Nagumo (FHN) model
for neuron excitability generates rich dynamical ...
Electrochemical and Photoelectrochemical Investigation of Water Oxidation with Hematite Electrodes
(Royal Society of Chemistry, 2012-04)
Atomic layer deposition (ALD) was utilized to deposit uniform thin films of hematite (α-Fe2O3) on transparent conductive substrates for photocatalytic water oxidation studies. Comparison of the oxidation of water to the ...
Simultaneous broadband microwave downconversion and programmable complex filtering by optical frequency comb shaping
(Optical Society of America, 2012)
High-repetition-rate optical frequency combs can act as broadband photonic mixers and downconvert a microwave signal to an intermediate frequency (IF) band so that it becomes accessible with high-speed electronics. In this ...
Water oxidation at hematite photoelectrodes: the role of surface states
(American Chemical Society, 2012)
Hematite (α-Fe2O3) constitutes one of the most promising semiconductor materials for the conversion of sunlight into chemical fuels by water splitting. Its inherent drawbacks related to the long penetration depth of light ...
Structural and electrochemical analysis of CIGS: Cr crystalline nanopowders and thin films deposited onto ITO substrates
(MDPI, 2021-04-23)
A new approach for the synthesis of nanopowders and thin films of CuInGaSe2 (CIGS) chalcopyrite material doped with different amounts of Cr is presented. The chalcopyrite material CuInxGa1 − xSe2 was doped using Cr to form ...
Air-stable and efficient inorganic–organic heterojunction solar cells using PbS colloidal quantum dots co-capped by 1-dodecanethiol and oleic acid
(Royal Society of Chemistry, 2012)
PbS colloidal quantum dot (CQD)-sensitized inorganic–organic
heterojunction solar cells fabricated by using the PbS CQDs
co-capped by the oleic acid (OA) and 1-dodecanethiol (DT)
ligand showed better device stability ...