Semiconductor nanowires are a promising candidate for next-generation solar cells. However, the optical response of nanowires is, due to diffraction effects, complicated to optimize. Here, we optimize through optical modeling the absorption in a dual-junction nanowire-array solar cell in terms of the Shockley-Quessier detailed balance efficiency limit. We identify efficiency maxima that origina...

A model, adapted from the Shockley-Queisser detailed balance model to tandem solar cells with a monolithically grown GaAsxP1-x top junction on a Si bottom junction, has been developed. Updated data have been used for the absorption spectrums. Two surface geometries, flat and ideally textured, have been investigated. As an important improvement over existing models, the effects of threading-disl...

The tandem photoelectochemical (PEC) cell based on oxide semiconductors for water splitting offers a potentially inexpensive route for solar hydrogen generation. At the heart of the device, a nanostructured photoanode for water oxidation is connected in series with one or two dye-sensitized solar cells (DSCs) that provide an extra bias to photogenerated electrons in order to perform water reduc...

To model the active layer in the hetero-junction solar cells, the C60, C70, PC60BM, PCBDAN fullerenes as acceptor, and (OS)n=1) oligoselenophenes as donor were considered. The (OS)n=14/C60, (OS)n=14/C70, (OS)n=14/PC60BM, and (OS)n=14/PCBDAN blends as a model of the active layer in the BHJ solar cell were chosen, and the optoelectronic properties were studied. The calculated efficiency of these ...

Ammonia (NH3) is one of the important chemicals for human life. The demand ammonia expected to increase every year. Conventionally, fixation process N2 produce NH3 in industrial sector carried out through Haber−Bosch process, which requires extreme temperature and pressure conditions that consume a high amount energy emit considerable CO2. Therefore, it necessary develop alternative technology ...

Nanowires (NWs) are recently used in several sensor or actuator devices to improve their ordered characteristics. Silicon nanowire (Si NW) is one of the most attractive one-dimensional nanostructures semiconductors because of its unique electrical and optical properties. In this paper, silicon nanowire (Si NW), is synthesized and characterized for application in photovoltaic device. Si NWs are ...

Abstract Nano‐textured surfaces are an intriguing approach for optimizing the optical characteristics monolithic perovskite/silicon tandem solar cells. Here, development of different textures silicon using various commercial additives is presented and their performance in heterojunction (SHJ) SHJ–perovskite cells discussed. After electrical characterization, we show that nano‐textured can easil...

In this work, simulations were performed to optimize the parameters of a lead-free perovskite/silicon tandem solar cell for improved efficiency and stability commercial devices. The top sub-cell is based on perovskite with large bandgap 1.8 eV, an electron transport layer SnO2/PCBM, which known its anti-hysteresis effect, hole NiO improve stability, whereas bottom n-type silicon increase whole ...