The Department of Physics cordially invites you to the following seminar:
Title:
Carbon Dots for Photovoltaic Devices
Speaker:
Prof. Mohd Hamdi Ali @ Buraidah
Department of Physics, Faculty of Science, Universiti Malaya
Date:
Friday June 28th 2024, 3:00 pm
Location:
BSFA, Department of Physics
Abstract:
Carbon Dots (CDs) are a new class of carbon-based nanomaterials known for their tunable fluorescent properties, strong luminescence, non-toxicity, and ease of synthesis. These attributes make them suitable for a wide range of applications, including photodetectors, white light-emitting diodes (LEDs), and photovoltaic cells. Depending on their specific structures and properties, Carbon Dots can also be referred to as: carbon nanodots (CNDs), graphene quantum dots (GQDs), carbon quantum dots (CQDs), polymer dots (PDs), and carbonized polymer dots (CPDs). The synthesis of CDs can be categorized into two main methods: (i) Top-Down methods, characterized by the "cutting" of larger carbon structures into smaller nano-sized particles (ii) Bottom-Up methods, Involves the preparation of CDs from small molecules or polymer precursors under relatively facile and mild conditions, such as hydrothermal treatment and ultrasonic reactions. In photovoltaic devices, CDs can be employed in various roles: (i) photosensitizers, (ii) electron acceptor and (iii) conductivity enhancer.
About the Speaker:
Associate prof. Dr. Mohd Hamdi bin Ali @ Buraidah received his BSc in 2006 by fizik komputeran dan elektronik, universiti malaya, and his PhD from um in 2012, advanced material, in UM. His areas of expertise include ionic conductor, solid state ionics, polymer electrolytes and dye-sensitized solar cells. He has published more than 55 articles in journals. He has won the um excellence award in 2013, 2016, 2018, 2021, and 2022, and is the programme coordinator, curriculum reviewer, and committee member for the department of physics.
Thank you.
