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Shelf Life Degradation of Bulk Heterojunction Solar Cells: Intrinsic Evolution of Charge Transfer Complex
(Wiley, 2015)
Achievement of long-term stability of organic photovoltaics is currently one of the major topics for this technology to reach maturity. Most of the techniques used to reveal degradation pathways are destructive and/or do ...
Are the Accompanying Cations of Doping Anions Influential in Conducting Organic Polymers? The Case of the Popular PEDOT
(Wiley, 2019-11-13)
Conducting organic polymers (COPs) are made of a conjugated polymer backbone supporting a certain degree of oxidation. These positive charges are compensated by the doping anions that are introduced into the polymer synthesis ...
Light Capacitances in Silicon and Perovskite Solar Cells
(Elsevier, 2019)
The framework on which the physics of silicon solar cells (SiSCs) is based robustly predicts
dependences of capacitance on light intensity and voltage, even when most recent innovations
are considered as the incorporation ...
Partial coverage methylammonium lead bromide films for solar cell application
(Elsevier, 2019-11-30)
Hybrid perovskite compounds as methylammonium lead halides are currently been
investigated for different optoelectronic applications. CH3NH3PbBr3 is a promising
member because of its electronic structure and large bandgap ...
Bidirectional frequency-shifting loop for dual-comb spectroscopy
(Optical Society of America, 2019)
We present a bidirectional recirculating frequency-shifting
loop, seeded by a continuous-wave (cw) laser, to perform
multi-heterodyne interferometry. This fiber-optic system
generates two counter-propagating “acousto-optic” ...
Carrier recombination flux in bulk heterojunction polymer: fullerene solar cells: Effect of energy disorder on ideality factor
(Elsevier, 2013-01)
Energy disorder reduces the achievable open-circuit voltage in organic bulk-heterojunction solar cells. Here the effect of disorder on charge carrier recombination flux is numerically modeled. The recombination current ...
Diffractive control of 3D multifilamentation in fused silica with micrometric resolution
(Optical Society of America, 2016)
We show that a simple diffractive phase element (DPE) can be used to manipulate at will the positions and energy of multiple filaments generated in fused silica under femtosecond pulsed illumination. The method allows ...
Ultrathin Acoustic Parity-Time Symmetric Metasurface Cloak
(American Association for the Advancement of Science, 2019)
Invisibility or unhearability cloaks have beenmade possible by using metamaterials enabling light or sound to flow around obstacle
without the trace of reflections or shadows. Metamaterials are known for being flexible ...
Intensity-Modulated Photocurrent Spectroscopy and Its Application to Perovskite Solar Cells
(American Chemical Society, 2020-09-23)
Frequency domain techniques are useful tools to characterize processes occurring on different time scales in solar cells and solar fuel devices. Intensity-modulated photocurrent spectroscopy (IMPS) is one such technique ...
Potassium ions as a kinetic controller in ionic double layers for hysteresis-free perovskite solar cells
(Royal Society of Chemistry, 2019-07-22)
Since ion migration and interaction with external contacts has been regarded as one of the origins for photocurrent density (J)–voltage (V) hysteresis and phase segregation in perovskite solar cells (PSCs) under operational ...