Photodetector device having a semiconductive conjugated polymer

US5523555A · kind A · utility

Assignee

• Cambridge Display Technology Limited · GB

Inventors

• Richard Henry Friend · Cambridge, GB
• Andrew Bruce Holmes · Cambridge, GB
• Donal Bradley · Beaconsfield, GB
• Robert N. Marks · Cambridge, GB

Key dates

• Filing date: Sep 14, 1994
• Grant date: Jun 4, 1996
• Expiry date: Sep 14, 2014

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E10/549

Abstract

A photodetector device includes a semiconductive conjugated polymer, such as PPV, arranged between first and second electrode layers having different work functions, a bias circuitry connected to apply a bias voltage between the first and second electrode layers, and a sensing circuitry connected to detect a photocurrent flowing between the first and second electrode layers across the polymer layer as a result of radiation incident on the polymer layer while the bias voltage is applied. The bias voltage is selected in relation to the thickness of the polymer layer.