Title: GRAPHENE ELECTRODES FOR ELECTRONIC DEVICES 213 212-Graphene 210 TPBi 208 Cho 206 CuPC 204 =-PEDOT ITO 202 >---200 214 ITO PEDOT CuPC C, TP I 2 2.70V/222 4-5 V Graphe ne 4.9ev s.2ev.2eV s,2ev suev 201 FIG. 2 220 N 0

and GM

Patent

Atlas literature

Patent

US 9,293,553

Title: GRAPHENE ELECTRODES FOR ELECTRONIC DEVICES 213 212-Graphene 210 TPBi 208 Cho 206 CuPC 204 =-PEDOT ITO 202 >---200 214 ITO PEDOT CuPC C, TP I 2 2.70V/222 4-5 V Graphe ne 4.9ev s.2ev.2eV s,2ev suev 201 FIG. 2 220 N 0

COX, Marshall, KYMISSIS, Ioannis, GORODETSKY, Alon, HAN, Melinda Y. et al.

13 September 2012·US

Drawings

Patent drawings and their descriptions. Click a drawing to enlarge it.

FIG. 1

FIG. 1 shows an example of an electronic device according to an 5 embodiment of the invention.

FIG. 2

FIG. 2 shows an example of an optoelectronic device according to an embodiment of the invention.

FIG. 3

FIG. 3 shows another example of an optoelectronic device according to an embodiment of the invention. 10

FIG. 4

FIG. 4 shows another example of an optoelectronic device according to an embodiment of the invention.

FIG. 5

FIG. 5 shows work function modiﬁcation of graphene according to an embodiment of the invention.

FIG. 6

FIG. 6 shows I -V curves of selected device according to an embodiment of 15 the invention.

FIG. 7

FIG. 7 shows I -V curves of selected device under monochromatic illumination according to an embodiment of the invention.

FIG. 8

FIG. 8 shows an example method of forming an electronic device according to an embodiment of the invention. 20 Detailed Description In some examples, graphene …

Worked examples

Embodiments described in the patent, grouped by the materials and process steps they use.

Organic Photovoltaic Device with Graphene Cathode

description derived process summary

6 materials

A laminated graphene device demonstrated as a cathode in organic photovoltaic devices. The device stack includes ITO, PEDOT, CuPC, C60, TPBi, and graphene layers. Work-function matching via contact doping is demonstrated, and increased power conversion efficiency due to transparency is reported. The device operates at approximately 2.70V with graphene work function of approximately 4.9 eV.

Device structures

Layer stacks claimed or described, ordered top of device to substrate.

organic photovoltaic device with graphene cathode

graphenecathode

TPBielectron transport layer

C₆₀acceptor organic semiconductor

CuPCdonor organic semiconductor

PEDOThole transport layer

ITOanode

Reported properties

Performance values and ranges asserted in the specification or claims.

Property	Value	Material
graphene work function	4.9 eV	graphene

Title: GRAPHENE ELECTRODES FOR ELECTRONIC DEVICES 213 212-Graphene 210 TPBi 208 Cho 206 CuPC 204 =-PEDOT ITO 202 >---200 214 ITO PEDOT CuPC C, TP I 2 2.70V/222 4-5 V Graphe ne 4.9ev s.2ev.2eV s,2ev suev 201 FIG. 2 220 N 0 | Matter42 Literature