Photoconductivity in molecularly doped poly(methylmethacrylate) sandwich cells

被引：7

作者：

Kishore, V. C. ^{[1
]}

Dhanya, R.

Kartha, C. Sudha

Sreekumar, K.

Joseph, Rani

机构：

[1] Cochin Univ Sci & Technol, Dept Phys, Cochin 682022, Kerala, India

[2] Cochin Univ Sci & Technol, Dept Polymer Sci & Tubber Technol, Cochin 682022, Kerala, India

[3] Cochin Univ Sci & Technol, Dept Appl Chem, Cochin 682022, Kerala, India

来源：

JOURNAL OF APPLIED PHYSICS | 2007年 / 101卷 / 06期

关键词：

D O I：

10.1063/1.2710773

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Poly(methyl)methacrylate was made photoconducting by molecular doping and the photoconductivity was investigated using modulated photocurrent technique. Low-temperature current-voltage measurements showed that the transport mechanism was thermally activated hopping. An experimental investigation of the photoconductivity action spectrum along with theoretical calculation enabled an estimation of the diffusion coefficient of the material. The presence of states with a distribution of lifetimes could be understood from the frequency response of the photocurrent. The photocurrent was due to the field-assisted dissociation of these states. (c) 2007 American Institute of Physics.

引用

页数：5

共 20 条

[1] Photoconductivity of TlGaSe2 layered single crystals [J].

Ashraf, IM ;

Abdel-Rahman, MM ;

Badr, AM .

JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2003, 36 (02) :109-113

[2] Extrinsic and intrinsic dc photoconductivity in a conjugated polymer [J].

Barth, S ;

Bassler, H ;

Rost, H ;

Horhold, HH .

PHYSICAL REVIEW B, 1997, 56 (07) :3844-3851

[3] Charge carrier photogeneration, trapping, and space-charge field formation in PVK-based photorefractive materials [J].

Däubler, TK ;

Bittner, R ;

Meerholz, K ;

Cimrová, V ;

Neher, D .

PHYSICAL REVIEW B, 2000, 61 (20) :13515-13527

[4] SPECTRAL DISTRIBUTION OF PHOTOCONDUCTIVITY [J].

DEVORE, HB .

PHYSICAL REVIEW, 1956, 102 (01) :86-91

[5] Transition from trap-controlled to trap-to-trap hopping transport in disordered organic semiconductors [J].

Fishchuk, II ;

Kadashchuk, AK ;

Vakhnin, A ;

Korosko, Y ;

Bässler, H ;

Souharce, B ;

Scherf, U .

PHYSICAL REVIEW B, 2006, 73 (11)

[6] Recombination kinetics of photoexcitations in films of MEH-PPV and MEH-PPV/C60 mixtures [J].

Gershman, E ;

Drori, T ;

Herzog, C ;

Eichen, Y ;

Ehrenfreund, E .

SYNTHETIC METALS, 2005, 154 (1-3) :237-240

[7] Photoconductive properties of PVK-based photorefractive polymer composites doped with fluorinated styrene chromophores [J].

Hendrickx, E ;

Zhang, YD ;

Ferrio, KB ;

Herlocker, JA ;

Anderson, J ;

Armstrong, NR ;

Mash, EA ;

Persoons, AP ;

Peyghambarian, N ;

Kippelen, B .

JOURNAL OF MATERIALS CHEMISTRY, 1999, 9 (09) :2251-2258

[8] Measurement of diffusion and drift of charge carriers from photocurrent transients [J].

Hirao, A ;

Nishizawa, H .

PHYSICAL REVIEW B, 1996, 54 (07) :4755-4761

[9] DIFFUSION AND DRIFT OF CHARGE-CARRIERS IN MOLECULARLY DOPED POLYMERS [J].

HIRAO, A ;

NISHIZAWA, H ;

SUGIUCHI, M .

PHYSICAL REVIEW LETTERS, 1995, 75 (09) :1787-1790

[10]

KISHORE VC, 2006, P INT C OPT MAT THIN, P613

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