Plasmonic absorption enhancement in organic solar cells with thin active layers

2009 ◽  
Vol 106 (7) ◽  
pp. 073109 ◽  
Author(s):  
Honghui Shen ◽  
Peter Bienstman ◽  
Bjorn Maes
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Absorption Enhancement ◽  
Active Layers

Absorption enhancement of oligothiophene dyes through the use of a cyanopyridone acceptor group in solution-processed organic solar cells

2012 ◽  
Vol 48 (13) ◽  
pp. 1889 ◽  
Author(s):  
Akhil Gupta ◽  
Abdelselam Ali ◽  
Ante Bilic ◽  
Mei Gao ◽  
Katalin Hegedus ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Absorption Enhancement ◽  
Solution Processed ◽  
Acceptor Group

In-situ investigation of the bulk heterojunction formation processes in the active layers of organic solar cells

2015 ◽  
Vol 10 (7-8) ◽  
pp. 600-605 ◽  
Author(s):  
K. Kvamen ◽  
S. Grigoryan ◽  
D. V. Anokhin ◽  
V. A. Bataev ◽  
A. I. Smirnov ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Bulk Heterojunction ◽  
Formation Processes ◽  
Active Layers ◽  
In Situ Investigation

Vertically Optimized Phase Separation with Improved Exciton Diffusion Enables High-Efficiency Organic Solar Cells with Thick Active Layers

2021 ◽  
Author(s):  
Yanming Sun ◽  
Yunhao Cai ◽  
Qian Li ◽  
Guanyu Lu ◽  
Hwa Sook Ryu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Phase Separation ◽  
Active Layer ◽  
Organic Solar Cells ◽  
High Efficiency ◽  
Diffusion Length ◽  
Active Layer Thickness ◽  
Exciton Diffusion ◽  
Exciton Diffusion Length ◽  
Active Layers

Abstract The development of high-performance organic solar cells (OSCs) with thick active layers is of crucial importance for the roll-to-roll printing of large-area solar panels. Unfortunately, increasing the active layer thickness usually results in a significant reduction in efficiency. Herein, we fabricated efficient thick-film OSCs with an active layer consisting of one polymer donor and two non-fullerene acceptors. The two acceptors were found to possess enlarged exciton diffusion length in the mixed phase, which is beneficial to exciton generation and dissociation. Additionally, layer by layer approach was employed to optimize the vertical phase separation. Benefiting from the synergetic effects of enlarged exciton diffusion length and graded vertical phase separation, a record high efficiency of 17.31% (certified value of 16.9%) was obtained for the 300 nm-thick OSC, with an unprecedented short-circuit current density of 28.36 mA cm−2, and a high fill factor of 73.0%. Moreover, the device with an active layer thickness of 500 nm also shows a record efficiency of 15.21%. This work provides new insights into the fabrication of high-efficiency OSCs with thick active layers.

scholarly journals Effects of Ag Nanocubes with Different Corner Shape on the Absorption Enhancement in Organic Solar Cells

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Feng Shan ◽  
Tong Zhang ◽  
Sheng-Qing Zhu
Keyword(s):  
Solar Cells ◽  
Active Layer ◽  
Organic Solar Cells ◽  
Field Enhancement ◽  
Localized Surface Plasmon ◽  
Absorption Enhancement ◽  
Absorption Performance ◽  
Different Shapes ◽  
Ag Ncs ◽  
Metallic Region

The effects of corner shape of silver (Ag) nanocubes (NCs) on optical absorptions of organic solar cells (OSCs) are theoretically investigated by finite element method (FEM) calculations. The absorption of sun light in the active layer is calculated. Significant absorption enhancements have been demonstrated in metallic region with different shapes of Ag NCs, among them corner radius (R) is zero result in the best light absorption performance of up to 55% enhancement with respect to bare OSCs. The origins of increased absorption are believed to be the effects of the huge electric field enhancement and increased scattering upon the excitation of localized surface plasmon resonance (LSPR). Apart from usingR=0, we show thatR=3, 6, and 11.29 of Ag NCs in metallic region of active layer may also result in the maximum comparable absorption enhancement of 49%, 41%, and 28%, respectively. In addition, a significant effect of the period of NCs is observed.

scholarly journals Tail state limited photocurrent collection of thick photoactive layers in organic solar cells

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Jiaying Wu ◽  
Joel Luke ◽  
Harrison Ka Hin Lee ◽  
Pabitra Shakya Tuladhar ◽  
Hyojung Cha ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Kelvin Probe ◽  
Doping Density ◽  
Efficient Operation ◽  
Tail State ◽  
Active Layers ◽  
Efficient Charge

AbstractWe analyse organic solar cells with four different photoactive blends exhibiting differing dependencies of short-circuit current upon photoactive layer thickness. These blends and devices are analysed by transient optoelectronic techniques of carrier kinetics and densities, air photoemission spectroscopy of material energetics, Kelvin probe measurements of work function, Mott-Schottky analyses of apparent doping density and by device modelling. We conclude that, for the device series studied, the photocurrent loss with thick active layers is primarily associated with the accumulation of photo-generated charge carriers in intra-bandgap tail states. This charge accumulation screens the device internal electrical field, preventing efficient charge collection. Purification of one studied donor polymer is observed to reduce tail state distribution and density and increase the maximal photoactive thickness for efficient operation. Our work suggests that selecting organic photoactive layers with a narrow distribution of tail states is a key requirement for the fabrication of efficient, high photocurrent, thick organic solar cells.

Impact of the Electron Acceptor Nature on the Durability and Nanomorphological Stability of Bulk Heterojunction Active Layers for Organic Solar Cells

Small ◽  
2020 ◽  
pp. 2004168
Author(s):  
Varun Vohra ◽  
Yumi Matsunaga ◽  
Tomoaki Takada ◽  
Ayumu Kiyokawa ◽  
Luisa Barba ◽  
...  
Keyword(s):  
Solar Cells ◽  
Electron Acceptor ◽  
Organic Solar Cells ◽  
Bulk Heterojunction ◽  
Active Layers

Broadband absorption enhancement in organic solar cells using refractory plasmonic ceramics

2017 ◽  
Vol 11 (1) ◽  
pp. 016001 ◽  
Author(s):  
Sara Magdi ◽  
Dengxin Ji ◽  
Qiaoqiang Gan ◽  
Mohamed A. Swillam
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Absorption Enhancement ◽  
Broadband Absorption
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