Dye-sensitized solar cells with PVA–KI–EC–PC gel electrolytes - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Optical and Quantum Electronics Année : 2014

Dye-sensitized solar cells with PVA–KI–EC–PC gel electrolytes

, , (1) ,
1
M. Aziz
  • Fonction : Auteur
I. M. Noor
  • Fonction : Auteur
Bouchta Sahraoui
A.K. Arof
  • Fonction : Auteur

Résumé

Gel polymer electrolytes consisting of PVA–EC–PC–KI have been studied in this work. The highest room temperature (298 K) conductivity of 12.92 mS cm −1 is obtained for PVA-based gel polymer electrolyte (GPE) with composition 14.5 PVA-21.7 EC-28.7 PC-30.4 KI-4.7  I 2 (in wt%). The high conductivity is due to the highest number density of mobile ions in the electrolyte. The conductivity–temperature dependence follows the Vogel–Tamman–Fulcher (VTF) relationship. The trend of pseudoactivation energy (Ea) with salt concentration is contrary to that of conductivity. PVA-based GPEs with 5 to 35 wt% KI were used as a medium in ruthenium 535 (N719) dye-sensitized solar cells. The efficiency ( η ) of the solar cells increased as the composition of KI salt in the electrolyte increased. The highest power conversion efficiency of 2.74 % is obtained for solar cells fabricated with electrolyte containing 35 wt% KI. The variation of efficiency follows the same trend as short circuit current density (Jsc) . The increase in Jsc is influenced by the increase in iodide ion concentration in the electrolyte that assists the redox process and helps electron to shuttle between ionized dye and counter electrode.

Domaines

Chimie
Fichier non déposé

Dates et versions

hal-03345045 , version 1 (15-09-2021)

Identifiants

Citer

M. Aziz, I. M. Noor, Bouchta Sahraoui, A.K. Arof. Dye-sensitized solar cells with PVA–KI–EC–PC gel electrolytes. Optical and Quantum Electronics, 2014, 46 (1), pp.133-141. ⟨10.1007/s11082-013-9722-0⟩. ⟨hal-03345045⟩
7 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook Twitter LinkedIn More