The optimal scattering structures for light-trapping in ultra-thin photovoltaic devices

Author(s):  
Eduardo Camarillo Abad ◽  
Larkin Sayre ◽  
Phoebe Pearce ◽  
Hannah J. Joyce ◽  
Louise C. Hirst
2010 ◽  
Vol 22 (18) ◽  
pp. 1394-1396 ◽  
Author(s):  
Xing Sheng ◽  
Jifeng Liu ◽  
Naomi Coronel ◽  
Anuradha M. Agarwal ◽  
Jurgen Michel ◽  
...  

2012 ◽  
Vol 98 ◽  
pp. 440-443 ◽  
Author(s):  
D. Sammito ◽  
G. Zacco ◽  
P. Zilio ◽  
V. Giorgis ◽  
A. Martucci ◽  
...  

Author(s):  
Wen-Hsien Huang ◽  
Jia-Min Shieh ◽  
Chang-Hong Shen ◽  
Jung Y. Huang ◽  
Hao-Chung Kuo ◽  
...  

Author(s):  
Wenfu Liu ◽  
Xiaolei Guo ◽  
Shule Xing ◽  
Haizi Yao ◽  
Yinling Wang ◽  
...  

Single nanowires (NWs) are of great importance for various optoelectronic applications, especially solar cells serving as powering nanoscale devices. However, weak off-resonant absorption can limit its light-harvesting capability. Here, we propose a single NW coated with the graded-index dual shells (DSNW). We demonstrate that with the proper thickness and refractive index of the inner shell, the DSNW exhibits significantly enhanced light trapping compared with the bare NW (BNW), and the NW only coated with the outer shell (OSNW) and inner shell (ISNW), which can be attributed to the optimal off-resonant absorption mode profiles due to the improved coupling between the reemitted light of the leak mode resonances of the Si core and the nanofocusing light from the dual shells with the graded refractive index. We found that the light absorption can be adjusted via tuning the thickness and refractive index of the inner shell, the photocurrent density is significantly enhanced by 134% (56%, 12%) in comparison with that of the BNW (OSNW, ISNW). This work advances our understanding of how to improve off-resonant absorption by applying graded dual shells and provides a new choice for designing high-efficiency single NW photovoltaic devices.


Nanomaterials ◽  
2018 ◽  
Vol 8 (10) ◽  
pp. 815 ◽  
Author(s):  
Jiabin Hao ◽  
Huiying Hao ◽  
Jianfeng Li ◽  
Lei Shi ◽  
Tingting Zhong ◽  
...  

In this contribution, the efficiencies of perovskite solar cells have been further enhanced, based on optical optimization studies. The photovoltaic devices with textured perovskite film can be obtained and a power conversion efficiency (PCE) of the textured fluorine-doped tin oxide (FTO)/Ag nanoparticles (NPs) embedded in c-TiO2/m-TiO2/CH3NH3PbI3/Spiro-OMeTAD/Au showed 33.7% enhancement, and a maximum of up to 14.01% was achieved. The efficiency enhancement can be attributed to the light trapping effect caused by the textured FTO and the incorporated Ag NPs, which can enhance scattering to extend the optical pathway in the photoactive layer of the solar cell. Interestingly, aside from enhanced light absorption, the charge transport characteristics of the devices can be improved by optimizing Ag NPs loading levels, which is due to the localized surface plasmon resonance (LSPR) from the incorporated Ag NPs. This light trapping strategy helps to provide an appropriated management for optical optimization of perovskite solar cells.


2015 ◽  
Vol 5 (1) ◽  
pp. 057007 ◽  
Author(s):  
Keyur K. Gandhi ◽  
Ahmed Nejim ◽  
Michail J. Beliatis ◽  
Christopher A. Mills ◽  
Simon J. Henley ◽  
...  

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