Light-emitting materials for electroluminescent devices

Abstract

The present invention concerns an electroluminescent device that comprises an anode and cathode separated by intermittent layers or crystal comprising an assembly of oligo atomic metal clusters confined in molecular sieve capable of emitting electromagnetic radiation of one or more colours when a voltage is applied over the device.

1 - 15 . (canceled) 
   
   
       16 . A light-emitting device comprising: an anode, a cathode and at least one layer or crystal comprising an assembly of oligo atomic metal clusters confined in microporous molecular sieves, the metal clusters being capable of emitting electromagnetic radiation in response to an electrical voltage applied through the anode and cathode, wherein said microporous molecular sieves are selected from the group consisting of zeolites, porous oxides, silicoaluminophosphates, aluminophosphates, gallophosphates, zincophosphates, titanosilicates and aluminosilicates, or mixtures thereof. 
   
   
       17 . The light-emitting device according to  claim 16 , wherein the anode, the cathode and the layers in between the electrodes comprising the electroluminescent (EL) material comprise layers on a substantially transparent substrate. 
   
   
       18 . The light-emitting device according to  claim 16 , wherein the anode or cathode is transparent or partially transparent. 
   
   
       19 . The light-emitting device according to  claim 16  wherein one single crystal of molecular sieves comprising an assembly of oligo atomic metal clusters is disposed in between an anode and cathode. 
   
   
       20 . The light-emitting device according to  claim 16 , wherein the emission layer comprises an assembly of oligo atomic metal clusters confined in molecular sieves dispersed in a conductive polymer. 
   
   
       21 . The light-emitting device according to  claim 16 , wherein the emission layer comprises an assembly of oligo atomic metal clusters confined in molecular sieves dispersed in a non-conductive polymer. 
   
   
       22 . The light-emitting device according to  claim 16 , wherein the emission layer comprises a deposited layer of an assembly of oligo atomic metal clusters confined in molecular sieves. 
   
   
       23 . The light-emitting device according to  claim 16 , wherein the device is encapsulated from the surrounding atmosphere. 
   
   
       24 . The light-emitting device according to  claim 16 , wherein the emission layer is part of a cavity in order to achieve lasing. 
   
   
       25 . The light-emitting device according to  claim 16  used for the generation of white light and or specific colored light. 
   
   
       26 . The light-emitting device according to  claim 16  comprising an assembly of different small Au and/or Ag clusters confined in one or a combination of multiple molecular sieves to create light at a predetermined color temperature. 
   
   
       27 . The light-emitting device according to  claim 16 , wherein the molecular sieves are selected from among microporous materials selected from the group consisting of zeolites, porous oxides, silicoaluminophosphates and aluminosilicates. 
   
   
       28 . The light-emitting device according to  claim 16 , wherein the molecular sieves are zeolites selected from the small pore zeolites among zeolite A like materials such as zeolite 3A, Zeolite 13X, Zeolite 4A and Zeolite 5A, and ZKF, and combinations thereof. 
   
   
       29 . The light-emitting device according to  claim 16 , wherein the molecular sieves are large pore zeolites selected from the group consisting of Mordenite, ZSM-5, MCM-22, Ferrierite, Faujasites X and Y. 
   
   
       30 . The light-emitting device according to  claim 16 , wherein the pores of the molecular sieves containing the small clusters of Au and/or Ag are coated with a coating matrix.