Flexible cobalt-phthalocyanine thin films with high charge carrier mobility

Journal Article · Mon Nov 26 04:00:00 EST 2012 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4767990· OSTI ID:22089527

Singh, Ajay ^[1]; Kumar, Arvind; Kumar, Ashwini; Samanta, Soumen; Debnath, Anil K.; Jha, Purushottam; Prasad, Rajeshwar; Aswal, Dinesh K.; Gupta, Shiv K. ^[1]; Salmi, Zakaria; Nowak, Sophie; Chehimi, Mohamed M. ^[2]

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1. Technical Physics Division, Bhabha Atomic Research Center, Mumbai 400 085 (India)
2. Universite Paris Diderot, Sorbonne Paris Cite, ITODYS, UMR 7086, CNRS F-75013 Paris (France)

The structural and charge transport characteristics of cobalt phthalocyanine (CoPc) films deposited on flexible bi-axially oriented polyethylene terephthalate (BOPET) substrates are investigated. CoPc films exhibited a preferential (200) orientation with charge carrier mobility of {approx}118 cm{sup 2} V{sup -1} s{sup -1} (at 300 K). These films exhibited a reversible resistance changes upon bending them to different radius of curvature. The charge transport in CoPc films is governed by a bias dependent crossover from ohmic (J-V) to trap-free space-charge limited conduction (J-V{sup 2}). These results demonstrate that CoPc films on flexible BOPET having high mobility and high mechanical flexibility are a potential candidate for flexible electronic devices.

• OSTI ID: 22089527
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 22 Vol. 101; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CARRIER MOBILITY
CHARGE CARRIERS
CHARGE TRANSPORT
COBALT COMPLEXES
COPPER COMPOUNDS
ELECTRONIC EQUIPMENT
FLEXIBILITY
LAYERS
MOLECULAR BEAM EPITAXY
ORGANIC SEMICONDUCTORS
PHTHALOCYANINES
POLYESTERS
SPACE CHARGE
SUBSTRATES
THIN FILMS