Terahertz Emission Enhancement of i-/n-Gallium Arsenide Thin Film on a Porous Silicon Distributed Bragg Reflector designed at 800nm

Modification of a cell’s architecture can enhance the performance parameters. This paper reports on the numerical modeling of a thin-film organic solar cell (OSC) featuring distributed Bragg reflector (DBR) pairs. The utilization of DBR pairs via the proposed method was found to be beneficial in terms of increasing the performance parameters. The extracted results showed that using DBR pairs helps capture the reflected light back into the active region by improving the photovoltaic parameters as compared to the structure without DBR pairs. Moreover, implementing three DBR pairs resulted in the best enhancement gain of 1.076% in power conversion efficiency. The measured results under a global AM of 1.5G were as follows: open circuit voltage (Voc) = 0.839 V; short circuit current density (Jsc) = 10.98 mA/cm2; fill factor (FF) = 78.39%; efficiency (η) = 11.02%. In addition, a thermal stability analysis of the proposed design was performed and we observed that high temperature resulted in a decrease in η from 11.02 to 10.70%. Our demonstrated design may provide a pathway for the practical application of OSCs.

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Efficient materials for thin-film CdTe solar cell based on back surface field and distributed Bragg reflector

Applied Physics A ◽

10.1007/s00339-019-3221-5 ◽

2019 ◽

Vol 126 (1) ◽

Author(s):

Syed Asfandyar Ali Kazmi ◽

Aimal Daud Khan ◽

Adnan Daud Khan ◽

Abdul Rauf ◽

Waqas Farooq ◽

...

Keyword(s):

Thin Film ◽

Solar Cell ◽

Bragg Reflector ◽

Back Surface ◽

Distributed Bragg Reflector ◽

Back Surface Field ◽

Cdte Solar Cell ◽

Surface Field

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Light Emission Enhancement of GaN-Based Photonic Crystal With Ultraviolet AlN/AlGaN Distributed Bragg Reflector

10.7567/ssdm.2010.d-3-6 ◽

2010 ◽

Author(s):

C. C. Chen ◽

J. R. Chen ◽

Y. C. Yang ◽

M. H. Shih ◽

H. C. Kuo

Keyword(s):

Photonic Crystal ◽

Light Emission ◽

Bragg Reflector ◽

Distributed Bragg Reflector ◽

Emission Enhancement

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Fabrication and optical characterization of a porous silicon distributed Bragg reflector

Journal of the Korean Physical Society ◽

10.3938/jkps.62.132 ◽

2013 ◽

Vol 62 (1) ◽

pp. 132-135 ◽

Cited By ~ 1

Author(s):

Bong-Ju Lee ◽

Bomin Cho ◽

Moonjoo Koh ◽

Honglae Sohn ◽

Young Chun Ko

Keyword(s):

Porous Silicon ◽

Optical Characterization ◽

Bragg Reflector ◽

Distributed Bragg Reflector

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Optimization of Textured Photonic Crystal Backside Reflector for Si Thin Film Solar Cells

MRS Proceedings ◽

10.1557/proc-0974-cc02-06 ◽

2006 ◽

Vol 974 ◽

Cited By ~ 1

Author(s):

Lirong Zeng ◽

Peter Bermel ◽

Yasha Yi ◽

Ning-ning Feng ◽

Bernard A. Alamariu ◽

...

Keyword(s):

Thin Film ◽

Solar Cells ◽

Photonic Crystal ◽

Bragg Reflector ◽

Thin Film Solar Cells ◽

Etch Depth ◽

Optimized Design ◽

Efficiency Enhancement ◽

Distributed Bragg Reflector ◽

Si Thin Film

ABSTRACTA new backside reflector, textured photonic crystal, is introduced into Si thin film solar cells. Scattering matrix method is used to systematically optimize all the parameters of the two components of the backside reflector, grating and distributed Bragg reflector, to achieve the highest power conversion efficiency for a given solar cell thickness. Experimentally, Si-on-insulator solar cells are being fabricated to verify the tremendous efficiency enhancement and optimal design. It is found that while the optimal period and etch depth of the grating, the Bragg wavelength of the distributed Bragg reflector, as well as the antireflection coating thickness all decrease as the cell becomes thinner, the optimum duty cycle of the grating remains almost constant at 0.5. For a 2 μm thick cell, the relative efficiency enhancement can be as high as 52% using the optimized design.

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