Molecular characterization of organic electronic films.
Organic electronics have emerged as a viable competitor to amorphous silicon for the active layer in low-cost electronics. The critical performance of organic electronic materials is closely related to their morphology and molecular packing. Unlike their inorganic counterparts, polymers combine complex repeat unit structure and crystalline disorder. This combination prevents any single technique from being able to uniquely solve the packing arrangement of the molecules. Here, a general methodology for combining multiple, complementary techniques that provide accurate unit cell dimensions and molecular orientation is described. The combination of measurements results in a nearly complete picture of the organic film morphology.
DeLongchamp
Dean M
DM
Polymers Division, National Institute of Standards and Technology, Gaithersburg, MD 20899-8541, USA. deand@nist.gov
Kline
R Joseph
RJ
Fischer
Daniel A
DA
Richter
Lee J
LJ
Toney
Michael F
MF
D004581:Electronics; D020527:Microscopy, Scanning Probe; D009930:Organic Chemicals / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry*; D013055:Spectrophotometry, Infrared; D014961:X-Ray Diffraction
D009930:Organic Chemicals; D011108:Polymers