Liquid Crystalline Perylene Diimide Outperforming Nonliquid Crystalline Counterpart: Higher Power Conversion Efficiencies (PCEs) in Bulk Heterojunction (BHJ) Cells and Higher Electron Mobility in Space Charge Limited Current (SCLC) Devices

2013 ◽  
Vol 5 (21) ◽  
pp. 11093-11100 ◽  
Author(s):  
Youdi Zhang ◽  
Helin Wang ◽  
Yi Xiao ◽  
Ligang Wang ◽  
Dequan Shi ◽  
...  
Keyword(s):  
Space Charge ◽  
Electron Mobility ◽  
Liquid Crystalline ◽  
Bulk Heterojunction ◽  
Power Conversion ◽  
Perylene Diimide ◽  
Space Charge Limited Current ◽  
Limited Current ◽  
Higher Power ◽  
Conversion Efficiencies

scholarly journals Effects of Nanoimprinted Structures on the Performance of Organic Solar Cells

2018 ◽  
Vol 2018 ◽  
pp. 1-6 ◽  
Author(s):  
Hardeep Singh Gill ◽  
Lian Li ◽  
Haizhou Ren ◽  
Ravi Mosurkal ◽  
Jayant Kumar
Keyword(s):  
Solar Cells ◽  
Active Layer ◽  
Organic Solar Cells ◽  
Bulk Heterojunction ◽  
Incident Light ◽  
Power Conversion ◽  
Heterojunction Solar Cells ◽  
Higher Power ◽  
Carrier Collection ◽  
Conversion Efficiencies

The effect of nanoimprinted structures on the performance of organic bulk heterojunction solar cells was investigated. The nanostructures were formed over the active layer employing the soft lithographic technique. The measured incident photon-to-current efficiency revealed that the nanostructured morphology over the active layer can efficiently enhance both light harvesting and charge carrier collection due to improvement of the absorption of incident light and the buried nanostructured cathode, respectively. The devices prepared with the imprinted nanostructures exhibited significantly higher power conversion efficiencies as compared to those of the control cells.

High hole mobility in room temperature discotic liquid crystalline tetrathienoanthracenes

2020 ◽  
Vol 56 (42) ◽  
pp. 5629-5632 ◽  
Author(s):  
Indu Bala ◽  
Joydip De ◽  
Santosh Prasad Gupta ◽  
Harpreet Singh ◽  
Upendra Kumar Pandey ◽  
...  
Keyword(s):  
Space Charge ◽  
Liquid Crystalline ◽  
Room Temperature ◽  
Hole Mobility ◽  
Space Charge Limited Current ◽  
Core Fragment ◽  
Limited Current ◽  
Space Charge Limited

Tetrathienoanthracene (TTA), a new discotic core fragment, is explored that shows a remarkably high hole mobility (μh) of 4.22 cm2 V−1 s−1 at room temperature when used in space-charge limited current (SCLC) devices.

Effect of illumination on the space charge limited current in organic bulk heterojunction diodes

2008 ◽  
Vol 94 (2) ◽  
pp. 281-286 ◽  
Author(s):  
Pankaj Kumar ◽  
S. C. Jain ◽  
Vikram Kumar ◽  
Suresh Chand ◽  
R. P. Tandon
Keyword(s):  
Space Charge ◽  
Bulk Heterojunction ◽  
Space Charge Limited Current ◽  
Limited Current ◽  
Heterojunction Diodes ◽  
Space Charge Limited

Space-charge-limited current in GaAs

1966 ◽  
Vol 2 (7) ◽  
pp. 282
Author(s):  
A.M. Phahle ◽  
K.C. Kao ◽  
J.H. Calderwood
Keyword(s):  
Space Charge ◽  
Space Charge Limited Current ◽  
Limited Current ◽  
Space Charge Limited

Study of Electron Transport in a-Si:H p-i-n Diodes: Use of the Transient Space-Charge-Limited-Current Technique

1995 ◽  
Vol 377 ◽  
Author(s):  
G. J. Adriaenssens ◽  
B. Yan ◽  
A. Eliat
Keyword(s):  
Space Charge ◽  
Conduction Band Edge ◽  
Time Range ◽  
Space Charge Limited Current ◽  
Transport Parameters ◽  
Limited Current ◽  
Emission Time ◽  
Time Regime ◽  
Carrier Extraction ◽  
Space Charge Limited

ABSTRACTA full and detailed transient space-charge-limited current (T-SCLC) study of a-Si:H p-i-n diodes has been carried out in the time range from 108s to 10s. In the short-time regime, general features of T-SCLC such as the current cusp and the carrier extraction period were observed, and related transport parameters were deduced. Electron emission from deep states was studied by measuring the current transients well beyond the extraction time. The emission time is thermally activated at temperatures higher than 250K and levels off at lower temperatures. The high temperature behaviour places the upper edge of the deep states at 0.42–0.52eV below the conduction band edge, and the attempt-to-escape frequency in the range of 1011-1013Hz. An observed shift of emission time with light intensity is attributed to defect relaxation.

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