Potentially modulated multi-quantum wells for high-efficiency solar cell applications

AbstractThe demands of ecofriendly technologies to produce a reliable supply of renewable energy on a large scale remains a challenge. A solar cell based on DSSC (Dye-Sensitized Solar Cell) technology is environmentally friendly and holds the promise of a high efficiency in converting sunlight into electricity. This manuscript describes the development of a light harvester system as a main part of a DSSC. Congo red dye has been functionalized with metals (Fe, Co, Ni), forming a series of complexes that serve as a novel light harvester on the solar cell. Metal-congo red complexes have been characterized by UV-VIS and FTIR spectroscopy, and elemental analyses. The performance of metal complexes in capturing photons from sunlight has been investigated in a solar cell device. The incorporation of metals to congo red successfully improved of the congo red efficiency as follows: Fe(II)-congo red, Co(II)-congo red and Ni(II)-congo red had efficiencies of 8.17%, 6.13% and 2.65%, respectively. This research also discusses the effect of metal ions on the ability of congo red to capture energy from sunlight.

Download Full-text

Numerical Simulation of Tunneling Effect in High-Efficiency Perovskite/Silicon Tandem Solar Cell

2020 47th IEEE Photovoltaic Specialists Conference (PVSC) ◽

10.1109/pvsc45281.2020.9300412 ◽

2020 ◽

Author(s):

Y. Agarwal ◽

B. Das ◽

A. J. Dutta ◽

A. A. Deka ◽

S. K. Tripathy ◽

...

Keyword(s):

Numerical Simulation ◽

Solar Cell ◽

High Efficiency ◽

Tunneling Effect ◽

Tandem Solar Cell

Download Full-text

Design and simulation of high efficiency lead-free heterostructure perovskite solar cell using SCAPS-1D

Optik ◽

10.1016/j.ijleo.2021.166258 ◽

2021 ◽

Vol 229 ◽

pp. 166258

Author(s):

S. Yasin ◽

T. Al Zoubi ◽

M. Moustafa

Keyword(s):

Solar Cell ◽

High Efficiency ◽

Perovskite Solar Cell ◽

Lead Free

Download Full-text

Numerical Simulation Analysis of Ag Crystallite Effects on Interface of Front Metal and Silicon in the PERC Solar Cell

Energies ◽

10.3390/en14030592 ◽

2021 ◽

Vol 14 (3) ◽

pp. 592

Author(s):

Myeong Sang Jeong ◽

Yonghwan Lee ◽

Ka-Hyun Kim ◽

Sungjin Choi ◽

Min Gu Kang ◽

...

Keyword(s):

Solar Cells ◽

Solar Cell ◽

High Efficiency ◽

Open Circuit Voltage ◽

Surface Recombination ◽

Open Circuit ◽

Surface Recombination Velocity ◽

Metal Interface ◽

Ag Crystallites ◽

Recombination Velocity

In the fabrication of crystalline silicon solar cells, the contact properties between the front metal electrode and silicon are one of the most important parameters for achieving high-efficiency, as it is an integral element in the formation of solar cell electrodes. This entails an increase in the surface recombination velocity and a drop in the open-circuit voltage of the solar cell; hence, controlling the recombination velocity at the metal-silicon interface becomes a critical factor in the process. In this study, the distribution of Ag crystallites formed on the silicon-metal interface, the surface recombination velocity in the silicon-metal interface and the resulting changes in the performance of the Passivated Emitter and Rear Contact (PERC) solar cells were analyzed by controlling the firing temperature. The Ag crystallite distribution gradually increased corresponding to a firing temperature increase from 850 ∘C to 950 ∘C. The surface recombination velocity at the silicon-metal interface increased from 353 to 599 cm/s and the open-circuit voltage of the PERC solar cell decreased from 659.7 to 647 mV. Technology Computer-Aided Design (TCAD) simulation was used for detailed analysis on the effect of the surface recombination velocity at the silicon-metal interface on the PERC solar cell performance. Simulations showed that the increase in the distribution of Ag crystallites and surface recombination velocity at the silicon-metal interface played an important role in the decrease of open-circuit voltage of the PERC solar cell at temperatures of 850–900 ∘C, whereas the damage caused by the emitter over fire was determined as the main cause of the voltage drop at 950 ∘C. These results are expected to serve as a steppingstone for further research on improvement in the silicon-metal interface properties of silicon-based solar cells and investigation on high-efficiency solar cells.

Download Full-text