Evidence of enhanced photocurrent response in corannulene films. Issue 72 (25th September 2017)

• Record Type: Journal Article
• Authors: Pastukhova, N.; Samos, L. Martin; Zoppi, L.; Pavlica, E.; Mathew, J.; Bratina, G.; Siegel, J. S.; Baldridge, K. K.
• Is Part Of: RSC advances. Volume 7:Issue 72(2017)
• Page Start: 45601
• Page End: 45606
• Publication Date: 2017-09-25
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c7ra08508g
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : Experimental optical absorption and photoconductivity spectra of thin films with GW–BSE theoretical predictions provide evidence for diffuse super atomic molecular orbitals (SAMOs) in corannulene, C20 H10 . Abstract : Photoconductivity spectra measured in non-crystalline corannulene thin layers are compared to optical absorption in solution phase and thin films. The unexpected enhanced photoconductivity is correlated with GW–BSE theoretical predictions of corannulene gas-phase excitonic spectra. Theoretical analysis reveals a consistent contribution involving transitions to Super Atomic Molecular Orbitals (SAMOs), a unique set of diffuse orbitals typical of curved conjugated constructs. Results suggest SAMO population via direct photoexcitation as a potential mechanism towards exploiting these diffuse orbitals as conducting channels in suitably assembled quantum nanostructures or solids.