Boosting Photon Harvesting in Organic Solar Cells Using Highly-Oriented Conjugated Molecular Crystals Grown on Graphene

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High Performance Graphene Transistors by Using Molecular Doping

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High Performance Organic Solar Cells Using Semiconductor-Insulator Hybrid Insertion layers

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Carrier-Selective Contact Limit on the Recombination Dynamics of Organic Photovoltaics Using Ferroelectric Blend Interlayer

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Tailoring Charge Transferring Interfaces for High Performance Organic Photovoltaics

DoctorInterfacial energetics determines the performance of organic photovoltaic cells (OPVs) based on a thin film of organic semiconductor blends. Since the randomly distributed donor and acceptor phases in bulk heterojunction (BHJ) based OPV devices intrinsically bear high probability of unwanted charge carrier recombination near both electrodes, facilitating collection of desired charge carriers with efficient blocking of the misdirected carriers at electrode interfaces are detrimental for the efficient charge collection and consequent photocurrent generation. However, the complexity of the polymer-based blend system and the indistinct interfaces in multilayer structure hindered comprehensive investigation of the charge-collecting interfaces. Herein, this thesis is dedicated to the systematic understanding the device operation physics at charge collecting interfaces and the optimization of OPV device performance by explicit control of the energy level alignment, carrier selectivity and organic/metal interactions

Carrier-selectivity Limit on the Recombination Dynamics of Organic Photovoltaics with Ferroelectric Blend

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Direct Surface Functionalization of Reduced Graphene Oxide for Bottom-Contact Organic Transistor

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The Role of Highly Conductive Hole Transport Layer in Perovskite Solar Cells

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Enhancing Power Conversion Efficiency of Perovskite Solar Cells Using Highly Conductive PEDOT:PSS Hole Transport Layer

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