時間：2026-06-12(五) 15:20 pm

講題：Amphiphilic Polymer Conetworks for Light Harvesting

講者 : 黃捷思 教授

服務單位：清華大學 材料科學工程學系 

地點：93456

主持人：林彥丞 教授

摘要：

Amphiphilic polymer conetworks (APCNs) have been primarily developed and used for wearable and biomedical applications owing to their bicontinuous hydrophilic/hydrophobic domains, optical clarity, solvent/ion compatibility, and elastic compliance. Here, we utilize these advantages and introduce APCNs as a scaffold for photonic/optoelectronics materials for light harvesting. We first engineer APCNs as a photonic scaffold for passive light harvesting. By loading hydrophilic donors (e.g., fluorescein) and hydrophobic acceptors (e.g., Lumogen Red) into adjacent, nanometer-separated domains, APCNs enable near-unity total energy transfer via Förster resonance energy transfer and photon recycling, broaden the effective absorption window, and concentrate emission, forming a high efficient wearable luminescent solar concentrator. This strategy also generalizes to multiple dyes (Rhodamine B, HPTS, DCM, Lumogen Yellow) and quantum dots (CsPbBr₃, CdSe/ZnS) without sacrificing mechanical robustness [Advanced Energy Materials, 2200441. (2022), Journal of Materials Chemistry A, 9(46), 25974-25981. (2021), Nano Energy, 76, 105039. (2020)].

Building on the passive scaffold, we transition to active APCN–organic photovoltaics (OPV) hybrids. [Advanced Energy Materials, e04273. (2025)] OPV PM6:Y6 bulk heterojunction molecules are incorporated in the hydrophobic domains while LSC dyes remain in the hydrophilic domains; dye emission is selected to spectrally match OPV absorption. Transient absorption reveals delayed PM6:Y6 ground-state bleach indicating exciton replenishment via energy transfer and GIWAXS shows that luminophore planarity/dihedral angles tune BHJ packing via van der Waals contacts to impact charge transport. Embedding functional moieties within APCNs thus couples spectral management with active-layer structuring, providing a multifunctional, flexible platform for next-generation optoelectronic devices.

學經歷：

Dr. Chieh-Szu Huang is an Assistant Professor (appointed in 2025) in the Department of Materials Science and Engineering at National Tsing Hua University (NTHU), where he leads the Functional Hybrid Materials Research Group, which deep dives into soft-matter hybrid materials for optoelectronic and energy-conversion technologies. His work focuses on the physics-guided design of nano-segregated polymer networks and polymer–inorganic hybrid systems, translating fundamental insights in photon management, exciton dynamics, and radiative processes into functional device platforms. Prior to joining NTHU, Dr. Huang was a Swiss National Science Foundation (SNSF) Postdoc.Mobility Fellow in the StranksLab at the University of Cambridge, where he developed polymeric nanocomposites for organic photovoltaics and halide-perovskite scintillators. He received his Ph.D. in Chemistry from ETH Zurich, conducting joint research at ETH and Empa on wearable luminescent solar concentrators and multifunctional polymer nanocomposites. Across his academic trajectory, Dr. Huang has advanced soft hybrid material architectures that enable controlled energy transfer, exciton transport, charge generation, and radiative emission, establishing a coherent research program spanning polymer physics, nanoscale domain engineering, and optoelectronic materials. His current efforts aim to bridge fundamental soft-matter science with scalable optoelectronic and radiation-detection technologies through international collaboration and translational research.