scholarly journals Optical simulation of ultimate performance enhancement in ultrathin Si solar cells by semiconductor nanocrystal energy transfer sensitization

2021 ◽  
Author(s):  
Brandon Yalin ◽  
Andreas C Liapis ◽  
Matthew D Eisaman ◽  
Dmytro Nykypanchuk ◽  
Chang-Yong Nam

Energy transfer (ET) from nanocrystals (NCs) has shown potential to enhance the optoelectronic performance of ultrathin semiconductor devices such as ultrathin Si solar cells, but the experimental identification of optimal...

Nanoscale ◽  
2016 ◽  
Vol 8 (11) ◽  
pp. 5873-5883 ◽  
Author(s):  
Son Hoang ◽  
Ahsan Ashraf ◽  
Matthew D. Eisaman ◽  
Dmytro Nykypanchuk ◽  
Chang-Yong Nam

Efficient energy transfer from semiconductor nanocrystals, combined with optical coupling effects, enhances the efficiency of ultrathin Si solar cells by up to 45 percent.


2018 ◽  
Vol 6 (27) ◽  
pp. 7302-7310 ◽  
Author(s):  
Kai Li ◽  
Rik Van Deun

A series of (Na,K)Mg(La,Gd)TeO6:Mn4+,Nd3+,Yb3+ materials were prepared and the broadband spectral conversion of UV/visible to near-infrared emission for c-Si solar cells was effectively realized via efficient energy transfer processes.


2018 ◽  
Vol 9 ◽  
pp. 2315-2329 ◽  
Author(s):  
Ziga Lokar ◽  
Benjamin Lipovsek ◽  
Marko Topic ◽  
Janez Krc

A variety of light management structures have been introduced in solar cells to improve light harvesting and further boost their conversion efficiency. Reliable and accurate simulation tools are required to design and optimize the individual structures and complete devices. In the first part of this paper, we analyze the performance of rigorous coupled-wave analysis (RCWA) for accurate three-dimensional optical simulation of solar cells, in particular heterojunction silicon (HJ Si) solar cells. The structure of HJ Si solar cells consists of thin and thick layers, and additionally, micro- and nano-textures are also introduced to further exploit the potential of light trapping. The RCWA was tested on the front substructure of the solar cell, including the texture, thin passivation and contact layers. Inverted pyramidal textures of different sizes were included in the simulations. The simulations rapidly converge as long as the textures are small (in the (sub)micrometer range), while for larger microscale textures (feature sizes of a few micrometers), this is not the case. Small textures were optimized to decrease the reflectance, and consequently, increase the absorption in the active layers of the solar cell. Decreasing the flat parts of the texture was shown to improve performance. For simulations of structures with microtextures, and for simulations of complete HJ Si cells, we propose a coupled modeling approach (CMA), where the RCWA is coupled with raytracing and the transfer matrix method. By means of CMA and nanotexture optimization, we show the possible benefits of nanotextures at the front interface of HJ Si solar cells, demonstrating a 13.4% improvement in the short-circuit current density with respect to the flat cell and 1.4% with respect to the cell with double-sided random micropyramids. We additionally demonstrate the ability to simulate a combination of nano- and microtextures at a single interface, although the considered structure did not show an improvement over the pyramidal textures.


2020 ◽  
Vol 49 (25) ◽  
pp. 8791-8798 ◽  
Author(s):  
Li Kong ◽  
Yingying Liu ◽  
Langping Dong ◽  
Liang Zhang ◽  
Lu Qiao ◽  
...  

In this study, we have reported broadband spectral conversion of UV/visible to near-infrared emission in the CaAl6Ga6O19:Cr3+,Ln3+ (Ln = Yb, Nd, and Er) materials for the c-Si solar cells via energy transfer.


2017 ◽  
Vol 385 ◽  
pp. 205-212 ◽  
Author(s):  
Lei Wu ◽  
Haiming Zhang ◽  
Feifei Qin ◽  
Xiaogang Bai ◽  
Ziye Ji ◽  
...  

2015 ◽  
Vol 17 (39) ◽  
pp. 26330-26337 ◽  
Author(s):  
Jin Zhao ◽  
Chongfeng Guo ◽  
Ting Li ◽  
Dan Song ◽  
Xiangying Su

The electronic structures of host, PL and PLE spectra indicate that Ba2LaV3O11:Yb3+might act as a promising NIR DC solar spectral converter to enhance the efficiency of c-Si solar cells.


2020 ◽  
Vol 532 ◽  
pp. 147460 ◽  
Author(s):  
Chan Wook Jang ◽  
Dong Hee Shin ◽  
Jung Sun Ko ◽  
Suk-Ho Choi

2010 ◽  
Vol 94 (8) ◽  
pp. 1329-1332 ◽  
Author(s):  
B. Prasad ◽  
S. Bhattacharya ◽  
A.K. Saxena ◽  
S.R. Reddy ◽  
R.K. Bhogra

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