Open AccessRF‐sputtered tungsten enabled surface plasmon effect in dye sensitised solar cells
Author(s) -
Srinivasan Lakshmi,
Ramanathan Kulandai Velu,
Gopakumar Gopika,
Nair Shantikumar V.,
Shanmugam Mariyappan
Publication year - 2020
Publication title -
iet optoelectronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.379
H-Index - 42
eISSN - 1751-8776
pISSN - 1751-8768
DOI - 10.1049/iet-opt.2019.0106
Subject(s) - dye sensitized solar cell , materials science , thin film , optoelectronics , absorption (acoustics) , tungsten , surface plasmon resonance , mesoporous material , short circuit , plasmon , nanotechnology , nanoparticle , chemistry , electrode , voltage , biochemistry , physics , quantum mechanics , electrolyte , composite material , metallurgy , catalysis
This work examined the possibility of overcoming narrow band optical absorption of organic dyes in the range of 350–700nm via surface plasmon effect mediated by RF‐sputtered tungsten (W) thin film on mesoporous TiO 2 for dye‐sensitised solar cells (DSSCs) application. The UV–visible spectroscopic measurement showed optical absorption of W‐film in the spectral range of 350–700nm with a dominant characteristic feature in the range of 350–550nm. W‐thin film‐coated TiO 2 was used as an electron acceptor in DSSCs and observed ∼28% enhancement in short circuit current density compared to that of in a pristine TiO 2 ‐based DSSC which did not use W‐thin film on TiO 2 . It is attributed to the local field‐induced enhancement in optical absorption which resulted in improved exciton generation and effective charge transport in DSSCs enabled by W‐thin film coating onto mesoporous TiO 2 .