Numerical simulations on the limits for the efficiency improvement of hybrid dye-microcrystalline silicon solar cells

In this work, the solar cell design parameters like- layer thickness, bandgap, donor and acceptor concentrations are varied to find optimum structure of a hydrogenated amorphous silicon (a-Si:H) and hydrogenated microcrystalline silicon (μc-Si:H) heterojunction p-i-n solar cell. A thin a-Si:H p-layer of 1 to 5 nm followed by a thick a-Si:H i-layer of thickness 1400 to 1600 nm and then thin n-layer of thickness 1 to 5 nm with acceptor concentration of 102 cm−3 and donor concentration of 1020 cm−3 and the bandgaps of p-, i-, and n- layers with higher bandgaps closer to 2.2 eV for a-Si:H p-layer, 1.85 eV for a-Si:H i-layer, and 1.2 eV for μc-Si:H n-layer have showed better performances. The optimum cell has a JSC of 18.93 mA/cm2, VOC of 1095 mV, Fill factor of 0.7124, and efficiency of 14.77%. The overall external quantum efficiency of the numerically designed cell also remained very high from 85-95 % for wavelengths of 300-650 nm range. This indicates that the device will perform its best under both high and low frequency i.e. ultra-violet, near visible and visible light wavelengths. Dhaka Univ. J. Sci. 69(2): 88-95, 2021 (July)

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“…For simulation all the default values of AFORS-HET were adopted, unless otherwise stated in this table. 24…”

Section: Simulationmentioning

confidence: 99%

“…Schematic diagram of a-Si:H/µc-Si:H heterojunction solar cell Input parameters of the baseline a-Si:H and µc-Si:H p-i-n heterostructure used in the simulations are given in Table1. For simulation all the default values of AFORS-HET were adopted, unless otherwise stated in this table 24.…”

mentioning

confidence: 99%

Performance Enhancement of an a-Si:H/μc-Si:H Heterojunction p-i-n Solar Cell by Tuning the Device Parameters

Islam

Ghosh

2021

Dhaka Univ. J. Sci.

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“…and n ? doped Si contact layers, in order to reduce film thickness and utilize favorable properties of the inorganic and of the organic material [12][13][14]. In a study by Nagata and Murakami [15] a prototype hybrid cell was assembled by combining Si particles and Ru complex dyes.…”

Section: Introductionmentioning

confidence: 99%

A new method for improving the performance of dye sensitized solar cell using macro-porous silicon as photoanode

2015

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This paper presents a novel method to improve the function of dye-sensitized solar cell (DSSC). The proposed method includes use of macro-porous silicon (PSi) as a photoanode for DSSC. The photoanode, PSi, was fabricated by a simple electrochemical anodization process. The effects of the obtained PSi-based photoanode on the DSSC performance are investigated by using photocurrent-voltage, UV-visible spectroscopy, and reflectance spectroscopy measurements. The results show that the macroporous structure in the PSi-based photoanode not only increases internal surface area in the photoanode, but also functions as an anti-reflective/light-trapping layer. Macroporous structure leads to the both enhancement of photoanode dye loading capacity and increasing the optical path length of the incident light inside the photoanode. This way, macro-porous structure plays an important role in the improvement of light harvesting efficiency. The optimal power conversion efficiency of 3.56 and 3.93 % (spin coated and sputtered TiO 2 respectively) is obtained from the PSi-based DSSC, with 58 and 75 % improvement in the efficiency as compared to a fabricated conventional DSSC. The measurement results suggest that exploiting PSi in the structure of photoanode raises hopes for low-cost and highperformance production of hybrid Si/dye solar cells in the future.

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Efficiency improvement of amorphous silicon single junction solar cell by design optimization

Sarkar

Ghosh

2017

2017 International Conference on Electrical, Computer and Communication Engineering (ECCE)

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Numerical simulations on the limits for the efficiency improvement of hybrid dye-microcrystalline silicon solar cells

Cited by 3 publications

References 10 publications

Performance Enhancement of an a-Si:H/μc-Si:H Heterojunction p-i-n Solar Cell by Tuning the Device Parameters

Performance Enhancement of an a-Si:H/μc-Si:H Heterojunction p-i-n Solar Cell by Tuning the Device Parameters

A new method for improving the performance of dye sensitized solar cell using macro-porous silicon as photoanode

Efficiency improvement of amorphous silicon single junction solar cell by design optimization

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