Comprehensive light trapping study of next generation thin film solar cells

2011 ◽  
Vol 1303 ◽  
Author(s):  
Zhou Zhou ◽  
Jian Zhou ◽  
Xiaowei Sun ◽  
Tim Cheng ◽  
Shengqi Wang ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Light Trapping ◽  
Solar Spectrum ◽  
Front Surface ◽  
Thin Film Solar Cells ◽  
Bottom Surface ◽  
Next Generation ◽  
Long Wavelength ◽  
Trapping Effects

ABSTRACTLight trapping is one of the key challenges for the next generation of thin film solar cells. In this work, we have identified the distinct light trapping effects for short and long wavelength solar spectrum ranges, by investigating lighting trapping structures on both sides of Si thin film solar cells. The sub-wavelength moth-eye-like photonic front surface and multi-layer grating photonic crystal reflector on the bottom surface are studied in detail via the Finite Difference Time Domain method for its solar energy absorption characteristics. Our study reveals the drastic difference in the light trapping effects within the solar spectrum wavelength. This work may provide guidance for efficiency enhancement of next generation thin film photovoltaic cells.

Enhancement of light trapping for thin film solar cells

MRS Advances ◽  
2018 ◽  
Vol 4 (13) ◽  
pp. 743-748
Author(s):  
Yasha Yi ◽  
Wei Guo ◽  
Yueheng Peng
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Light Trapping ◽  
Solar Spectrum ◽  
Front Surface ◽  
Thin Film Solar Cells ◽  
Bottom Surface ◽  
Next Generation ◽  
Long Wavelength ◽  
Trapping Effects

ABSTRACTLight trapping is one of the key challenges for next generation thin film solar cells. In this work, we have identified the distinct light trapping effects for short and long wavelength solar spectrum range, by investigating lighting trapping structures on both sides of Si thin film solar cells. The sub-wavelength photonic front surface by wet etching and multi-layer photonic crystal reflector on the bottom surface are studied in detail for its solar energy absorption characteristics. Our study reveals the drastic difference of the light trapping effects within the solar spectrum wavelength. This work may provide guidance for the efficiency enhancementfor next generation thin film photovoltaic cells.

Surface-Plasmon Enhanced Near-Bandgap Light Absorption in Silicon Photovoltaics

2008 ◽  
Author(s):  
Lu Hu ◽  
Xiaoyuan Chen ◽  
Gang Chen
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Light Trapping ◽  
Large Fraction ◽  
Solar Spectrum ◽  
Silicon Solar Cells ◽  
Long Wavelength ◽  
Thin Film Silicon ◽  
Silicon Photovoltaics ◽  
Silicon Based

One key challenge for silicon-based solar cells is the weak absorption of long-wavelength photons near the bandgap (1.1eV) due to the indirect bandgap of silicon. A large fraction of the AM 1.5 solar spectrum falls into a regime (0.7 μm – 1.1 μm) where silicon does not absorb light well. The capture of these long-wavelength photons imposes a particular problem to the thin-film silicon solar cells. For this reason, thin-film silicon solar cells often incorporate some forms of light trapping mechanisms.

Dipolar and Quadrupolar Modes of SiO 2 /Au Nanoshell Enhanced Light Trapping in Thin Film Solar Cells

2011 ◽  
Vol 28 (8) ◽  
pp. 087306 ◽  
Author(s):  
Yi-Ming Bai ◽  
Jun Wang ◽  
Nuo-Fu Chen ◽  
Jian-Xi Yao ◽  
Xing-Wang Zhang ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Light Trapping ◽  
Thin Film Solar Cells

The optical near-field of randomly textured light trapping structures for thin-film solar cells

2008 ◽  
Author(s):  
T. Beckers ◽  
K. Bittkau ◽  
C. Rockstuhl ◽  
S. Fahr ◽  
F. Lederer ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Light Trapping ◽  
Near Field ◽  
Thin Film Solar Cells
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