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Pregled bibliografske jedinice broj: 45063

Photoluminescence of donor-acceptor carbazole-based molecules in amorphous and powder forms


Ades, D.; Boucard, V.; Cloutet, E.; Siove, Alain; Olivero, Charles; Castex, Marie-Claude; Pichler, Goran
Photoluminescence of donor-acceptor carbazole-based molecules in amorphous and powder forms // Journal of Applied Physics, 87 (2000), 10; 7290-7293 (međunarodna recenzija, članak, znanstveni)


Naslov
Photoluminescence of donor-acceptor carbazole-based molecules in amorphous and powder forms

Autori
Ades, D. ; Boucard, V. ; Cloutet, E. ; Siove, Alain ; Olivero, Charles ; Castex, Marie-Claude ; Pichler, Goran

Izvornik
Journal of Applied Physics (0021-8979) 87 (2000), 10; 7290-7293

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Photoluminescence; carbazole molecules

Sažetak
We present absorption and photoluminescence features of four samples of carbazole molecules substituted with various electron-acceptor groups. These molecules named 1-(N-ethylcarbazolyl),2-substituted,2-cyanovinylene contain in their structure the electron-donor carbazole nucleus and cyanovinylene bearing either another nitrile function, an ethylester, a phenyl or a para-nitrophenyl groups. It is shown that depending on the strength of the donor-acceptor internal charge transfer, both the absorption and emission spectra are more or less red-shifted. It is found that the ethyl-ester derivative displays the best relative photoluminescence efficiency among all the samples and its peak is measured at 490 nm when taking amorphous thin film. The microcrystalline powder form of the same material exhibits spectral narrowing and shift of the peak emission. We obtain further narrowing of the emission band and further red shifting of the emission when we illuminate transversely a glass capillary containing the crystalline sample by an ultraviolet light-emitting diode (UV LED).

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA


Projekt / tema
00350102

Ustanove
Institut za fiziku, Zagreb

Autor s matičnim brojem:
Goran Pichler, (37152)

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


Uključenost u ostale bibliografske baze podataka:


  • The INSPEC Science Abstracts series