Push-pull type material having spirobifluorene as pi-spacer for dye sensitized solar cells

CAN M., Bilgili H., Demirak K., GÜLTEKİN B., KOYUNCU S., KUŞ M., ...More

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, vol.41, no.46, pp.21293-21299, 2016 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 41 Issue: 46
  • Publication Date: 2016
  • Doi Number: 10.1016/j.ijhydene.2016.07.193
  • Journal Name: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.21293-21299
  • Keywords: Donor-acceptor dyes, pi-bridge effect, Dye sensitized solar cell
  • Çanakkale Onsekiz Mart University Affiliated: Yes

Abstract

Two organic dyes for dye-sensitized solar cells (DSSC) based on spirobifluorene were synthesized and characterized. Electrochemical, spectroscopic and photovoltaic properties of the dyes have been investigated. Hexyloxy substituted triarylamine was used as electron donating moiety in the molecule while spirobifluorene and cyanoacrylic acid were used as pi-bridge and acceptor groups, respectively. MK162-sensitized solar cells exhibited a short-circuit current (I-SC) of 4,92 mA cm(-2), an open-circuit voltage (V-OC) of 520 mV and a fill factor (FF) of 0.59, resulting an overall power conversion efficiency of 1,52 where the reference cell, Z907 was yielded an overall conversion efficiency of 4.08% efficiency with 620 mV of V-OC and 14.51 mA cm(-2) of Isc under standard AM 1.5 illumination. (C) 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.