Electroluminescent device

US11258025B2 · kind B2 · utility

Assignee

• Cambridge Enterprise Limited · GB

Inventors

• Richard Henry Friend · Cambridge, GB
• Reza Saberi Moghaddam · Cambridge, GB
• Zhi Kuang Tan · Singapore, SG
• Aditya Sadhanala · Panvel, IN
• May Ling Lai · St Ives, GB
• Pablo Docampo · Newcastle upon Tyne, GB
• Felix Deschler · Cambridge, GB
• Michael Price · Abingdon, GB
• Fabian Hanusch · Munich, DE
• Henry James Snaith · Felton, GB

Key dates

• Filing date: Apr 29, 2015
• Grant date: Feb 22, 2022
• Expiry date: Nov 18, 2036

Classification

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

Abstract

A solid state light-emitting device comprising: a first electrode coupled to a first charge injecting layer; a second electrode coupled to a second charge injecting layer; an emissive layer comprising a perovskite material, wherein the emissive layer is provided between the first and second charge injecting layers; and wherein the bandgaps of the first and second charge injecting layers are larger than the bandgap of the emissive perovskite layer.