scholarly journals Charge Transport in Spiro-OMeTAD Investigated through Space-Charge-Limited Current Measurements

2018 ◽  
Vol 9 (4) ◽  
Author(s):  
Jason A. Röhr ◽  
Xingyuan Shi ◽  
Saif A. Haque ◽  
Thomas Kirchartz ◽  
Jenny Nelson
Keyword(s):  
Space Charge ◽  
Charge Transport ◽  
Space Charge Limited Current ◽  
Limited Current ◽  
Space Charge Limited

scholarly journals Charge transport in organic nanocrystal diodes based on rolled-up robust nanomembrane contacts

2017 ◽  
Vol 8 ◽  
pp. 1277-1282 ◽  
Author(s):  
Vineeth Kumar Bandari ◽  
Lakshmi Varadharajan ◽  
Longqian Xu ◽  
Abdur Rehman Jalil ◽  
Mirunalini Devarajulu ◽  
...  
Keyword(s):  
Physical Properties ◽  
Space Charge ◽  
Charge Transport ◽  
Transport Properties ◽  
Space Charge Limited Current ◽  
Temperature Dependent ◽  
Organic Systems ◽  
Organic Nanocrystals ◽  
Limited Current ◽  
Space Charge Limited

The investigation of charge transport in organic nanocrystals is essential to understand nanoscale physical properties of organic systems and the development of novel organic nanodevices. In this work, we fabricate organic nanocrystal diodes contacted by rolled-up robust nanomembranes. The organic nanocrystals consist of vanadyl phthalocyanine and copper hexadecafluorophthalocyanine heterojunctions. The temperature dependent charge transport through organic nanocrystals was investigated to reveal the transport properties of ohmic and space-charge-limited current under different conditions, for instance, temperature and bias.

Study of Vertical and Lateral Charge Transport Properties of DPP-Based Polymer/PC61BM Films Using Space Charge Limited Current (SCLC) and Field Effect Transistor Methods and their Effects on Photovoltaic Characteristics

2015 ◽  
Vol 68 (11) ◽  
pp. 1741 ◽  
Author(s):  
Leanne Murphy ◽  
Bin Sun ◽  
Wei Hong ◽  
Hany Aziz ◽  
Yuning Li
Keyword(s):  
Space Charge ◽  
Charge Transport ◽  
High Temperatures ◽  
Field Effect ◽  
Annealing Temperature ◽  
Hole Mobility ◽  
Space Charge Limited Current ◽  
Blend Films ◽  
Limited Current ◽  
Space Charge Limited

We studied the vertical and lateral charge transport characteristics of a diketopyrrolopyrrole polymer donor (D)–PC61BM acceptor (A) system by measuring the space charge limited current (SCLC) mobility and field-effect mobility respectively. It was found that with an increase in annealing temperature, the SCLC hole mobility decreased for the pure polymer (PDBFBT) but increased for the PDBFBT:PC61BM blends, which could be explained by changes in the crystallinity and crystal orientation (edge-on versus face-on). The pure PDBFBT and most blend films showed the maximum field-effect hole mobility (µh) when annealed at 100°C, which then declined as the annealing temperature was further increased. Surprisingly, the D/A = 1/1 blend films annealed at high temperatures exhibited an abrupt increase in the field-effect µh. This unusual phenomenon was interpreted by the antiplasticization effect of PC61BM, which promoted the molecular organization of the polymer. The effect of annealing on the carrier mobility was further correlated with the performance of inverted organic solar cell devices with the PDBFBT:PC61BM blend (D/A = 1/3). Thermal annealing at high temperatures (>100°C) was found to obstruct electron transport and cause the device performance to significantly deteriorate.

Analysis of charge transport in high-mobility diketopyrrolopyrole polymers by space charge limited current and time of flight methods

RSC Advances ◽  
2014 ◽  
Vol 4 (67) ◽  
pp. 35344 ◽  
Author(s):  
Kwang Hee Cheon ◽  
Jangwhan Cho ◽  
Byung Tack Lim ◽  
Hui-Jun Yun ◽  
Soon-Ki Kwon ◽  
...  
Keyword(s):  
Space Charge ◽  
Charge Transport ◽  
Time Of Flight ◽  
High Mobility ◽  
Space Charge Limited Current ◽  
Limited Current ◽  
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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