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Sensitization of the Photoconductivity of Polyvinylcarbazole With 2,4,7 Trinitrophenanthraquinone

IP.com Disclosure Number: IPCOM000090013D
Original Publication Date: 1969-Jan-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Dowden, BF: AUTHOR [+2]

Abstract

Use is made of 2,4,7-trinitrophenanthraquinone TPNQ as a sensitizer of the photoconductivity of polyvinylcarbazole PVCZ. In such use, at various molar ratios and coating thicknesses, the pertinent electrophotographic data is as follows. Use of 2,4,7-trinitrophenanthraquinone TPNQ Mole Fraction TPNQ Wet Gap* Charge per Mole PVCZ (mil) t 1/2** Acceptance 1.0 7.0 4.5 900 V 1.0 5.0 2.5 600 1.0 2.0 1.5 240 0.8 7.0 3.0 700 0.5 5.0 1.5 500 0.5 2.0 1.5 300 0.6 7.0 3.5 500 0.6 5.0 1.

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Sensitization of the Photoconductivity of Polyvinylcarbazole With 2,4,7 Trinitrophenanthraquinone

Use is made of 2,4,7-trinitrophenanthraquinone TPNQ as a sensitizer of the photoconductivity of polyvinylcarbazole PVCZ. In such use, at various molar ratios and coating thicknesses, the pertinent electrophotographic data is as follows.

Use of 2,4,7-trinitrophenanthraquinone TPNQ Mole Fraction TPNQ Wet Gap* Charge per Mole PVCZ (mil) t 1/2** Acceptance 1.0 7.0 4.5 900 V

1.0 5.0 2.5 600

1.0 2.0 1.5 240

0.8 7.0 3.0 700

0.5 5.0 1.5 500

0.5 2.0 1.5 300

0.6 7.0 3.5 500

0.6 5.0 1.5 450

0.6 2.0 1.5 450

0.4 7.0 4.0 750

0.3 7.0 4.0 650

0.2 7.0 4.0 600

0.1 7.0 5.0 750

0.05 7.0 8.0 600

*All films cast from a 10% PVCZ solution in tetrahydrofuran

**Fifty micron thick commercial sample of selenium under

identical tungsten, 2800 degrees K, illumination yields a t 1/2

of approx. 0.6 sec.

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