Dye sensitized solar cell based on 1,8-naphthalene benzimidazole comprising carboxyl group

ERTEN S., Eren E., ICLI S.

EUROPEAN PHYSICAL JOURNAL-APPLIED PHYSICS, vol.38, no.3, pp.227-230, 2007 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 38 Issue: 3
  • Publication Date: 2007
  • Doi Number: 10.1051/epjap:2007086
  • Journal Name: EUROPEAN PHYSICAL JOURNAL-APPLIED PHYSICS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.227-230
  • Süleyman Demirel University Affiliated: Yes

Abstract

We report the characterization of 1,8-naphtha naphthalene benzimidazole comprising carboxyl group.We have fabricated dye-sensitized nanocrystalline TiO2 solar cell (DSSC) based on naphthalene benzimidazole dye. The device structure is FTO/nc-TiO2/Dye/I-/I-3(-)/Pt/ FTO. We calculated the E-HOMO and E-LUMO levels of this new dye by using cyclic voltammetry measurement. The E-LUMO level of naphthalene benzimidazole is 3.2 eV. This value is higher than the conduction band of TiO2. Electrons can be injected to the conduction band of TiO2. The current-voltage (I-V) characteristic of cell was measured under simulated AM 1.5 illumination (100 mW/cm(2)). We obtained the open circuit voltage; V-oc = 0.344 V, short circuit current density; I-sc = 5.93 mA cm(-2), filling factor; FF = 0.45, power conversion efficiency; eta = 0.91%.