Uiltrafast Photoinduced Carrier Dynamics of Organic Semiconductors Measured by Time-resolved Terahertz Spectroscopy

Esenturk O., Melinger J. S., Lane P. A., Heilweil E. J.

236th National Meeting of the American-Chemical-Society, Pennsylvania, Amerika Birleşik Devletleri, 17 - 21 Ağustos 2008, cilt.1039, ss.241-254 identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Cilt numarası: 1039
  • Basıldığı Şehir: Pennsylvania
  • Basıldığı Ülke: Amerika Birleşik Devletleri
  • Sayfa Sayıları: ss.241-254
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

Intrinsic properties of organic semiconductors are investigated by Time-Resolved Terahertz Spectroscopy (TRTS) to assess their relative mobilities and efficiencies. Our results are well correlated with device measurements and show the effectiveness and advantages of using this non-contact optical technique to rapidly identify prospective materials. After a brief introduction of the TRTS technique, we summarize our results from relative mobility measurements of the organic semiconductor polymers poly(3-hexylthiophene) (P3HT) and poly(2,5-bis(3-tetradecylthiophen-2yl)thieno[3,2-b]thiophene (PBTTT) as model active layers in transistor devices. We also synopsize our recent results from relative efficiency studies of blend and alternating multilayer films of zinc phthalocyanine (ZnPc) and buckminsterfullerene (C(60)) as model active nanolayers for efficient solar cells.