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Proceedings Article

Photoelectrical properties of indandione fragment containing azobenzene compounds

[+] Author Affiliations
Janis Latvels, Raitis Grzibovskis, Kaspars Pudzs, Aivars Vembris

Univ. of Latvia (Latvia)

Dagnija Blumberga

Riga Technical Univ. (Latvia)

Proc. SPIE 9137, Organic Photonics VI, 91371G (May 1, 2014); doi:10.1117/12.2052604
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From Conference Volume 9137

  • Organic Photonics VI
  • Barry P. Rand; Chihaya Adachi; David Cheyns; Volker van Elsbergen
  • Brussels, Belgium | April 14, 2014

abstract

Organic materials are becoming more popular due to their potential application in electronics. Low molecular weight materials possible produce from solution are in special consideration. It gives the possibility to avoid both thermal evaporation in vacuum, and use of polymers in thin film preparation process. Indandione fragment containing azobenzene compounds are one of such materials. These compounds are good candidates for use in design of novel molecular electronic devices due to their possibility to form amorphous structure from solution thus allowing developing flexible, small size systems with low production costs. In this work three indandione fragment containing azobenzene compounds were investigated. Difference between these compounds is bulky groups which assist formation of amorphous thin film. Absorption spectra of the investigated compounds are similar to P3HT but with higher absorption coefficient. Molecule ionization and electron affinity levels of these compounds are around -5.45eV and -3.80eV, respectively. Combining PCBM with investigated compounds could lead to difference between electron affinity levels maximum of 0.15eV. It is several times less compared to ~1eV for P3HT:PCBM system. Higher difference between the donor ionization level and the acceptor affinity level could also be obtained which should lead to the higher open circuit voltage. © (2014) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation

Janis Latvels ; Raitis Grzibovskis ; Kaspars Pudzs ; Aivars Vembris and Dagnija Blumberga
" Photoelectrical properties of indandione fragment containing azobenzene compounds ", Proc. SPIE 9137, Organic Photonics VI, 91371G (May 1, 2014); doi:10.1117/12.2052604; http://dx.doi.org/10.1117/12.2052604


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