An efficient binary cathode interlayer for large-bandgap non-fullerene organic solar cells

2019 ◽  
Vol 7 (20) ◽  
pp. 12426-12433 ◽  
Author(s):  
Qingwu Yin ◽  
Kai Zhang ◽  
Long Zhang ◽  
Jianchao Jia ◽  
Xi Zhang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Efficient Charge ◽  
Charge Extraction ◽  
Cathode Interlayer

A binary cathode interlayer with both efficient charge extraction and transportation properties for large-bandgap non-fullerene OSCs.

Polydopamine/ZnO electron transport layers enhance charge extraction in inverted non-fullerene organic solar cells

2019 ◽  
Vol 7 (35) ◽  
pp. 10795-10801 ◽  
Author(s):  
Nafees Ahmad ◽  
Xuning Zhang ◽  
Shuo Yang ◽  
Dongyang Zhang ◽  
Jianqiu Wang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Electron Transport ◽  
Organic Solar Cells ◽  
Photovoltaic Performance ◽  
Charge Extraction ◽  
Cathode Interlayer

The cathode interlayer plays a key role in the photovoltaic performance in organic solar cells.

Alcohol-soluble fluorene derivate functionalized with pyridyl groups as a high-performance cathode interfacial material in organic solar cells

2021 ◽  
Author(s):  
Lin Lin ◽  
Zeping Huang ◽  
Yuanqi Luo ◽  
Tingen Peng ◽  
Baitian He ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Photovoltaics ◽  
Organic Solar Cells ◽  
High Performance ◽  
Fluorene Derivative ◽  
Interfacial Material ◽  
Cathode Interlayer

The synthesis and application as a cathode interlayer in organic photovoltaics of a fluorene derivative with pyridyl functional chains are presented.

Rational compatibility in ternary matrix enables all-small-molecule organic solar cells with over 16% efficiency

2021 ◽  
Author(s):  
Mengyun Jiang ◽  
Hairui Bai ◽  
Hongfu Zhi ◽  
Lu Yan ◽  
Han Young Woo ◽  
...  
Keyword(s):  
Solar Cells ◽  
Phase Separation ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
Charge Generation ◽  
Molecular Arrangement ◽  
Efficient Charge

How to manipulate the phase separation and molecular arrangement to meet the need of efficient charge generation and extraction remains as the long-standing challenge in all-small-molecule organic solar cells (ASM-OSCs)....

A universal approach for optimizing charge extraction in electron transporting layer-free organic solar cells via Lewis base doping

2019 ◽  
Vol 7 (45) ◽  
pp. 25808-25817
Author(s):  
Rong Wang ◽  
Boxin Wang ◽  
Jianqiu Wang ◽  
Xuning Zhang ◽  
Dongyang Zhang ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Solar Cells ◽  
Organic Solar Cells ◽  
Photovoltaic Device ◽  
Lewis Base ◽  
Device Performance ◽  
Universal Approach ◽  
Electron Transporting Layer ◽  
Charge Extraction ◽  
Base Doping

Applying anion-induced electron transfer doping with a series of TXABr salts to non-fullerene organic solar cells enables to tune the doping efficiency and photovoltaic device performance.

Conditions for efficient charge generation preceded by energy transfer process in non-fullerene organic solar cells

2021 ◽  
Author(s):  
L. Benatto ◽  
C. A. M. Moraes ◽  
G. Candiotto ◽  
K. R. A. Sousa ◽  
J. P. A. Souza ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Solar Cells ◽  
Binding Energy ◽  
Transfer Process ◽  
Organic Solar Cells ◽  
Driving Force ◽  
Energy Transfer Process ◽  
Simple Relationship ◽  
Charge Generation ◽  
Efficient Charge

Our results provide a simple relationship involving the driving force and binding energy of CT state to maximize charge generation in non-fullerene organic solar cells.

A Self-Organized Poly(vinylpyrrolidone)-Based Cathode Interlayer in Inverted Fullerene-Free Organic Solar Cells

2018 ◽  
Vol 31 (2) ◽  
pp. 1804657 ◽  
Author(s):  
Bei Yang ◽  
Shaoqing Zhang ◽  
Sunsun Li ◽  
Huifeng Yao ◽  
Wanning Li ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Self Organized ◽  
Cathode Interlayer

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.

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