Electron transfer composition for use in an electron injection layer for organic electronic devices

1. An electron transfer composition comprising a metal carboxylate selected from the group consisting of

wherein

(“*”) denotes a linkage to an adjacent unit or group, or where the metal carboxylate of formula I is a polymer, (“*”) denotes a link to an adjacent repeating unit or to a terminal group of the polymer chain,

n is at least 1,

p=1 and M=Cs + , or

p=2 and M=Ba 2+ ,

wherein

(“*”) denotes a linkage to an adjacent unit or group, or where the metal carboxylate of formula II-a or II-b is a polymer, (“*”) denotes a link to an adjacent repeating unit or to a terminal group of the polymer chain,

n is 0-10,000,

m is at least 1 and

M=Cs + or 0.5 Ba 2+ ,

and

Wherein

(“*”) denotes a linkage to an adjacent unit or group, or where the metal carboxylate of formula III is a polymer, (“*”) denotes a link to an adjacent repeating unit or to a terminal group of the polymer chain,

n is at least 1,

m is 0 to 10,000,

R is a phenyl group substituted with at least group COOM or an alkyl group substituted with at least one group COOM and

M=Cs + or M=0.5 Ba 2+ .

2. An electron transfer composition according to claim 1 , wherein the metal carboxylate is selected from the group consisting of

wherein n is at least 1, p=1 and M=Cs,

and

wherein n is 0 to 10,000, m is at least 1 and M=Cs.

3. An electron transfer composition according to claim 1 , wherein the electron transfer composition additionally comprises Cs 2 CO 3 .

4. An electron transfer composition according to claim 1 further comprising one or more compounds or polymers having properties selected from the group consisting of semiconducting, charge transport, hole/electron transport, hole/electron blocking and electrically conducting, properties.

5. An electron transfer composition according to claim 1 , wherein the polymer comprises one or more monomers selected from the following group consisting of olefins and fluorinated olefins, acrylic acid, vinyl, dienes styrene, methacrylic acid and derivatives of these.

6. A formulation comprising the electron transfer composition of claim 1 , and one or more solvents.

7. A formulation according to claim 6 , wherein the one or more solvents is selected from the group consisting of water, alcohols and blends of these.

8. A method for making a component or device which comprises incorporating the electron transfer composition of claim 1 as a charge transport, semiconducting, electrically conducting, photoconducting or light emitting material in an optical, electrooptical, electronic, electroluminescent or photoluminescent component or device.

9. An organic electronic component or device comprising an electron transfer layer, said electron transfer layer consisting of the electron transfer composition of claim 1 .

10. An organic electronic component or device which includes an electron transfer composition according to claim 1 , wherein the electronic component or device is selected from the group consisting of organic field effect transistors (OFET), thin film transistors (TFT), integrated circuits (IC), logic circuits, capacitors, radio frequency identification (RFID) tags, devices or components, organic light emitting diodes (OLED), organic light emitting transistors (OLET), flat panel displays, backlights of displays, organic photovoltaic devices (OPV), organic solar cells (O-SC), photodiodes, laser diodes, photoconductors, organic photodetectors (OPD), electrophotographic devices, electrophotographic recording devices, organic memory devices, sensor devices, charge injection layers, charge transport layers or interlayers in polymer light emitting diodes (PLEDs), Schottky diodes, planarising layers, antistatic films, polymer electrolyte membranes (PEM), conducting substrates, conducting patterns, electrode materials in batteries, alignment layers, biosensors, biochips, security markings, security devices, and components or devices for detecting and discriminating DNA sequences.

11. An organic electronic component or device according to claim 10 , wherein the organic electronic component or device is selected from the group consisting of photodiode, organic light emitting diode (OLED), photoconductor and organic photovoltaic device.

12. An organic electronic component or device according to claim 10 , wherein the organic electronic component or device is a photodiode.