The effect of transparent conductive oxides background spacer layer on light trapping in thin film solar cells

Author(s):  
Guangyao Su ◽  
Chuanhong Liu ◽  
Fangwang Gou ◽  
Deng Xiao ◽  
Zhaoyu Zhang
2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Sayan Seal ◽  
Vinay Budhraja ◽  
Liming Ji ◽  
Vasundara V. Varadan

Incorporating plasmonic structures into the back spacer layer of thin film solar cells (TFSCs) is an efficient way to improve their performance. The fishnet structure is used to enhance light trapping. Unlike other previously suggested discrete plasmonic particles, the fishnet is an electrically connected wire mesh that does not result in light field localization, which leads to high absorption losses. The design was verified experimentally. A silver fishnet structure was fabricated using electron beam lithography (EBL) and thermal evaporation. The final fabricated structure optically resembles a TFSC. The results predicted by numerical simulations were reproduced experimentally on a fabricated sample. We show that light absorption in the a-Si absorber layer is enhanced by a factor of 10.6 at the design wavelength of 690 nm due to the presence of the fishnet structure. Furthermore, the total absorption over all wavelengths was increased by a factor of 3.2. The short-circuit current of the TFSC was increased by 30% as a result of including the fishnet.


2012 ◽  
Vol 101 (10) ◽  
pp. 103903 ◽  
Author(s):  
Rahul Dewan ◽  
Jorj I. Owen ◽  
Darin Madzharov ◽  
Vladislav Jovanov ◽  
Jürgen Hüpkes ◽  
...  

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Nils Neugebohrn ◽  
Norbert Osterthun ◽  
Maximilian Götz-Köhler ◽  
Kai Gehrke ◽  
Carsten Agert

AbstractOxide/metal/oxide (OMO) layer stacks are used to replace transparent conductive oxides as front contact of thin-film solar cells. These multilayer structures not only reduce the overall thickness of the contact, but can be used for colouring of the cells utilizing interference effects. However, sheet resistance and parasitic absorption, both of which depend heavily on the metal layer, should be further reduced to reach higher efficiencies in the solar cells. In this publication, AgOX wetting layers were applied to OMO electrodes to improve the performance of Cu(In,Ga)Se2 (CIGS) thin-film solar cells. We show that an AgOX wetting layer is an effective measure to increase transmission and conductivity of the multilayer electrode. With the presented approach, we were able to improve the short-circuit current density by 18% from 28.8 to 33.9 mA/cm2 with a metal (Ag) film thickness as low as 6 nm. Our results highlight that OMO electrodes can be an effective replacement for conventional transparent conductive oxides like aluminium-doped zinc oxide on 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 ◽  
...  

2008 ◽  
Author(s):  
T. Beckers ◽  
K. Bittkau ◽  
C. Rockstuhl ◽  
S. Fahr ◽  
F. Lederer ◽  
...  

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