scholarly journals Optical spectrum of bottom-up graphene nanoribbons: towards efficient atom-thick excitonic solar cells

2014 ◽  
Vol 4 (1) ◽  
Author(s):  
Cesar E. P. Villegas ◽  
P. B. Mendonça ◽  
A. R. Rocha
2021 ◽  
Vol 125 (3) ◽  
pp. 2212-2219
Author(s):  
Shu Hu ◽  
Xiao Yang ◽  
Bo Yang ◽  
Yang Zhang ◽  
Heng Li ◽  
...  

2014 ◽  
Vol 15 (1) ◽  
pp. 295-309 ◽  
Author(s):  
Akimitsu Narita ◽  
Xinliang Feng ◽  
Klaus Müllen

2013 ◽  
Vol 3 (1) ◽  
Author(s):  
Hâldun Sevinçli ◽  
Cem Sevik ◽  
Tahir Çağın ◽  
Gianaurelio Cuniberti

2017 ◽  
pp. 139-160
Author(s):  
Brian A. Gregg

Author(s):  
M. Samy ◽  
M. Salem ◽  
T. Abdolkader

2005 ◽  
Vol 20 (12) ◽  
pp. 3167-3179 ◽  
Author(s):  
Sophie E. Gledhill ◽  
Brian Scott ◽  
Brian A. Gregg

Organic photovoltaic devices are poised to fill the low-cost, low power niche in the solar cell market. Recently measured efficiencies of solid-state organic cells are nudging 5% while Grätzel’s more established dye-sensitized solar cell technology is more than double this. A fundamental understanding of the excitonic nature of organic materials is an essential backbone for device engineering. Bound electron-hole pairs, “excitons,” are formed in organic semiconductors on photo-absorption. In the organic solar cell, the exciton must diffuse to the donor–accepter interface for simultaneous charge generation and separation. This interface is critical as the concentration of charge carriers is high and recombination here is higher than in the bulk. Nanostructured engineering of the interface has been utilized to maximize organic materials properties, namely to compensate the poor exciton diffusion lengths and lower mobilities. Excitonic solar cells have different limitations on their open-circuit photo-voltages due to these high interfacial charge carrier concentrations, and their behavior cannot be interpreted as if they were conventional solar cells. This article briefly reviews some of the differences between excitonic organic solar cells and conventional inorganic solar cells and highlights some of the technical strategies used in this rapidly progressing field, whose ultimate aim is for organic solar cells to be a commercial reality.


2018 ◽  
Vol 6 (5) ◽  
pp. 2073-2080 ◽  
Author(s):  
Yan Liang ◽  
Ying Dai ◽  
Yandong Ma ◽  
Lin Ju ◽  
Wei Wei ◽  
...  

Titanium nitride halide TiNX (X = F, Cl, Br) monolayers for highly efficient excitonic solar cells.


Sign in / Sign up

Export Citation Format

Share Document