Nanocrystal quantum dots (QD) show great promise toward improving solar cell efficiencies through the use of quantum confinement to tune absorbance across the solar spectrum and enable multi-exciton generation. Despite this remarkable potential for high photocurrent generation, the achievable open-circuit voltage (Voc) is fundamentally limited due to non-radiative recombination processes in QD ...

A new method for measuring component cell current-voltage (I-V) characteristics in a tandem-junction two-terminal solar cell is described. The measurements are performed with (a-Si/a-SiGe) tandem structure solar cell using two separate light beams of different wavelengths. The I-V characteristics of the compone nt cells are obtained and open-circuit voltage (Voc), short-circuit current (Isc) an...

design and optimization of a single crystalline silicon (c-si) solar cell is performed to achieve the maximum light conversion efficiency. various parameters such as doping concentration and thicknesses, and geometrical dimension of surface pyramids are studied. the inverted surface pyramid is used to increase the efficiency of the solar cell, and engineered oxide layer is used as the passivati...

two organic compounds (sc-23=(e)-2-cyano-3-(2,3-dimethoxyphenyl) acrylic acid and sc-25=(e)-2-cyano-3-(2,5-dimethoxyphenyl) acrylic acid) involving methoxy groups as the electron donor and cyanoacrylic acid group as the electron acceptor have been investigated for dye sensitized solar cells. they shows a short-circuit current density (jsc) of 2.08 and 1.81 ma cm-2, an open circuit voltage (voc)...

The idea to use ferroelectric materials (PZN-PT) came from the fact that nature could facilitate electric charges accumulation on interfaces of solar cell. Thus, it would increase open circuit voltage Voc which reach more than 10 V. This directly impact efficiency is proportional Voc, thus hoping obtain never equaled by halide perovskites are less stable and resistant in aggressive environments...

A novel organometal halide perovskite (CH3NH3PbI2Br) is synthesized and used as a visible light absorber to sensitize one-dimensional (1D) TiO2 nanowire arrays (NWAs) for all-solid-state hybrid solar cells. It achieved a power conversion efficiency (PCE) of 4.87% and an open circuit voltage (Voc) of 0.82 V, both higher than those of its analogue CH3NH3PbI3.

The objective of this paper is to find the effect of dust on the performance of photovoltaic modules. To this end, the International Center for Research and Training in solar energy at Dakar University and the Lasquo-ISTIA Laboratory of Angers University have put in place a research project in order to investigate the impact of Sahelian climatic conditions on the photovoltaic (PV) modules chara...

We report novel photovoltaic (PV) switching based on the low exciton-binding energy property of an organic heptazole (C26H16N2) thin film after fabrication of an heptazole-based Schottky diode. The Schottky diode cell displayed an instantaneous voltage of 0.3 V as an open circuit voltage (VOC) owing to the work function difference between the Schottky and ohmic electrode under deep blue illumin...

a  commercial  ti-nanoxide  was  deposited  on  in-doped  sno2 (ito) polymer  substrates by  tape casting  technique with different thicknesses  (7,  14  and  36μm)  to  be  used  as  photoelectrode  in flexible  dye-sensitized  solar  cells  (dsscs).  ruthenium  dye  was adsorbed on each tio2 film for 24 h. the resulting photoelectrodes were used to form flexible dsscs in combination with elec...

We investigate the dark and illuminated current density-voltage (J/V) characteristics of poly(2-methoxy-5-(2-ethylhexyloxy)1-4-phenylenevinylene) (MEHPPV)/single-walled carbon nanotubes (SWNTs) composite photovoltaic cells. Using an exponential band tail model, the conduction mechanism has been analysed for polymer only devices and composite devices, in terms of space charge limited current (SC...