2 October 2025
Bahang Bay, Penang, Malaysia
Asia/Kuala_Lumpur timezone

Mechanism of Band Gap Modification for Anthocyanin Types of Natural Dyes by Neuro-Fuzzy Inferences System Analysis

Not scheduled
20m
Bahang Bay, Penang, Malaysia

Bahang Bay, Penang, Malaysia

Materials for Energy and Environmental Applications

Speaker

Muhammad Asyraf Mat Asri

Description

Power conversion efficiency (PCE) from naturally-sensitized DSSCs is typically in the average range (<0.05–1.7%). It requires a thorough understanding of the role of pigment’s molecular structure, electronic properties, anchoring groups, and conjugated double bonds or free π-electrons for improved PCE from enhanced carriers transport and decreased recombination. Narrowband absorption and poor binding with photoanode are the limitations for band gap using natural dye that must be overcome. Therefore, building supervised classification models would allow the scientific community to further study the impact of band gap on the performance of natural dyes. We aim to optimize the non-linearity behaviour of band gap using the adaptive neural fuzzy inference system (ANFIS) model for natural dye sensitizers performance based on bandgap energy, anchoring group, and HOMO-LUMO. In this study, natural dyes will be extracted from different anthocyanin types. Data collection using UV-VIS and Cyclic voltammetry (CV) for HOMO-LUMO and bandgap energy will be collected. To further interpret the data collection, the ANFIS model will design a five-layered neural network that uses fuzzy inference system concepts. Input (π bonds, anchoring group, HOMO-LUMO, bandgap), hidden, and output layers (% of PCE) made up the structure. This work shows the potential of adopting trained classifiers for analysing natural sensitizer’s abilities to inject and separate generated electron-hole pairs for producing renewable, cost-effective, and sustainable energy.

Primary author

Co-authors

Dr Haryati Jaafar (Universiti Malaysia Perlis) Prof. Zainal Ariffin Ahmad (Universiti Sains Malaysia) Dr Hidayani Jaafar (Universiti Malaysia Kelantan)

Presentation materials

There are no materials yet.