نتایج جستجو برای: hetro junction solar cell
تعداد نتایج: 1823468 فیلتر نتایج به سال:
The performance dependence of a CdS/CdTe nanopillar solar cell on various device and materials parameters is explored while examining its performance limits through detailed device modeling. The optimized cell enables efficiencies 20% with minimal short circuit current dependence on bulk minority carrier diffusion length, demonstrating the efficient collection of photogenerated carriers, theref...
Organic-inorganic hybrid tandem solar cells attract a considerable amount of attention due to their potential for realizing high efficiency photovoltaic devices at a low cost. Here, highly efficient triple-junction (TJ) hybrid tandem solar cells consisting of a double-junction (DJ) amorphous silicon (a-Si) cell and an organic photovoltaic (OPV) rear cell were developed. In order to design the T...
Reducing wafer thickness provides the most effective potential to lower the production cost of c-Si PV modules. Two thin n-type solar cell concepts are compared in terms of their optical and electrical properties: a monofacial device with a full-area metal surface at the rear which is beneficial in particular to such thin solar cells and a very similar but even better industrially applicable bi...
We determine the limiting efficiency for monolithic tandem solar cells that employ crystalline silicon top-cell as well bottom cell. In such a design, extends over region of very high generation rate forms at front device. Consequently, design benefits from excess carrier density in top-cell, resulting voltage device is more than twice equally thick single junction cells. Considering Coulomb-en...
Tandem solar cells constructed from a crystalline silicon (c-Si) bottom cell and a low-cost top cell offer a promising way to ensure long-term price reductions of photovoltaic modules. We present a four-terminal tandem solar cell consisting of a methyl ammonium lead triiodide (CH3NH3PbI3) top cell and a c-Si heterojunction bottom cell. The CH3NH3PbI3 top cell exhibits broad-band transparency ow...
Reducing the formation of cracks during growth GaInP/GaInAs/Ge 3-junction solar cells on Ge|Si virtual substrates has been attempted by thinning structure, namely Ge bottom cell and GaInAs middle cell. The theoretical analysis performed using realistic device parameters indicates that can be drastically thinned to 1000 nm while increasing its In content 8% with an efficiency loss in below 3%. e...
A new technique, the spectral response of the steady-state photoconductance, is proposed for solar cell characterization in research and development. The method is experimentally demonstrated with solar cell precursors having emitters with markedly different levels of surface and bulk recombination losses. A highefficiency solar cell has been investigated, comparing the new spectral response me...
We demonstrate the implementation of a hybrid solar cell that comprises a surface nanostructured n-type Si and poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate). The Si surface before deposition of the organic layer was nanostructured by using CsCl self-assembled nanoparticles as a hard mask and dry etching to form radial junction architectures and enhance light diffusion and absorption. ...
this research reports a facile ultrasonic approach for the synthesis of iron vanadate (fevo4) nanoparticles with the aid of ammonium metavanadate (nh4vo3) and fe(no3)3.9h2o as the starting reagents without adding external surfactant, capping agent or template in an aqueous solution. furthermore, to examine the solar cell application of as-synthesized iron vanadate (fevo4) nanoparticles, fto/tio...
The Si tandem solar cells are very attractive for realizing high efficiency and low cost. This paper overviews current status of III-V/Si including our results. analytical results potential loss analysis bottom as well bandgap energy optimization sub-cells presented. 2-junction 3-junction have efficiencies 36% 42%, respectively. ERE (external radiative efficiency) is analyzed in order to clarif...
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