Numerical analysis of space-charge limited current with consideration of diffusion and electric field at electrode

1980 ◽  
Vol 100 (3) ◽  
pp. 25-31
Author(s):  
Mitsumasa Iwamoto ◽  
Taro Hino
Author(s):  
И.Б. Захарова ◽  
Д.И. Долженко ◽  
В.Ф. Бородзюля ◽  
Н.Т. Сударь

AbstractLong-term exposure of a polycrystalline fullerene C_60 film in a constant electric field of 1–4 MV/cm produces an electroforming effect manifested by increase in conductivity of the film within several orders of magnitude. After this electroforming, the current–voltage ( I – U ) characteristic shows a high degree of current stability and reproducibility of results. In fields of 10^5–10^6 V/cm, the I – U characteristics of electroformed films are determined by the space-charge limited current. The concentration ( N _ t ≈ 4 × 10^21 m^–3) of carrier traps and their energy ( E _ t ≈ 0.176 eV) have been estimated.


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

1995 ◽  
Vol 377 ◽  
Author(s):  
G. J. Adriaenssens ◽  
B. Yan ◽  
A. Eliat

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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