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含硫小分子高效有机太阳能电池给体材料的分子设计

摘要第4-6页
Abstract第6-8页
Chapter 1: Introduction第12-52页
    1.1 Motivation for organic photovoltaics第12-13页
    1.2 Organic photovoltaics: Introduction and background第13-18页
        1.2.1 Importance and applications of solar energy第17-18页
    1.3 Principal mechanism in the organic solar cells第18-19页
        1.3.1 Light Absorption第18页
        1.3.2 Formation of exciton第18页
        1.3.3 Migration of exciton第18页
        1.3.4 Charge separation第18-19页
        1.3.5 Recombination or exciton decay第19页
    1.4 Classification of Solar cells第19-21页
        1.4.1 Silicon solar cells第19-20页
        1.4.2 Thin film solar cells第20页
        1.4.3 Light-absorbing dyes or Dye-sensitized solar cells (DSSC)第20页
        1.4.4 Quantum Dot Solar Cells (QDSCs)第20页
        1.4.5 Organic solar cells based on vacuum deposited small molecules第20-21页
        1.4.6 Organic/polymer solar cells第21页
    1.5 Device based photovoltaic cells classification第21-24页
        1.5.1 Single layer photovoltaic cells第21页
        1.5.2 Double layer heterojunction photovoltaic cells第21-23页
        1.5.3 Bulk Heterojunction photovoltaic cells第23页
        1.5.4 Graded heterojunction photovoltaic cells第23页
        1.5.5 Multi-junction (MJ) or Tandem solar cells第23-24页
    1.6 Parameters effecting solar cells performance第24-25页
        1.6.1 Open-circuit voltage (Voc)第24页
        1.6.2 Short-circuit current (Isc)第24页
        1.6.3 Fill factor (FF)第24页
        1.6.4 Efficiency第24-25页
        1.6.5 Temperature第25页
        1.6.6 Incident light intensity第25页
    1.7 Organic semiconductor materials第25-42页
        1.7.1 Donors or Hole transport materials第25-39页
        1.7.2. Acceptor or electron transport materials第39-42页
    1.8 Challenges for achieving highly efficient OPVs第42页
    1.9. Structure and scope of the dissertation第42-45页
    References第45-52页
Chapter 2: Quantum Chemical Methods第52-75页
    2.1 Introduction and development of quantum mechanics第52-54页
    2.2 Molecular orbital theory (MOT)第54页
    2.3 The Schr dinger equation第54-58页
    2.4 The Hartree-Fock (HF) approximation第58-60页
    2.5 Density functional theory (DFT)第60-63页
    2.6 Time-dependent DFT (TD-DFT)第63-66页
    2.7 Basis sets第66-67页
    2.8 Hopping Mechanism第67-70页
        2.8.1 Marcus electron transfer rate第67-70页
    2.9 UV-Visible absorption spectroscopy (theoretical principle)第70-72页
    References第72-75页
Chapter 3: The Ratio and Topology Effect of Benzodithiophene Donor Fragment to Benzooxadiazole Acceptor Fragment on the Optoelectronic Properties of Donor Molecules toward Solar Cells Materials第75-113页
    3.1 Introduction第75-78页
    3.2 Computational details第78-79页
    3.3 Results and discussions第79-107页
        3.3.1 Designed molecules第79页
        3.3.2 Molecular structures第79-81页
        3.3.3 Electronic properties第81-86页
        3.3.4 FMO Distributions patterns第86-89页
        3.3.5 Absorption properties第89-99页
        3.3.6 Dipole Moment第99页
        3.3.7 Reorganization Energy第99-105页
        3.3.8 Preferable donors and their match with acceptor molecules第105-107页
    3.4 Conclusion第107-109页
    References第109-113页
Chapter 4: X-Shaped Donor Molecules Based on Benzo[2,1-b:3,4-b′]dithiophene as Organic Solar Cells Materials with PDIs as Acceptors第113-149页
    4.1 Introduction第113-115页
    4.2 Theoretical methodology第115-119页
    4.3 Results and discussion第119-141页
        4.3.1 Selection of building blocks第119-120页
        4.3.2 Donor’s HOMO and LUMO energy levels relative to their fragments第120-121页
        4.3.3 Frontier molecular orbitals (FMOs)第121-126页
        4.3.4 Absorption properties第126-134页
        4.3.5 Natural Transition Orbital (NTO) Analysis第134-135页
        4.3.6 Match of optoelectronic properties between donors and acceptors第135-136页
        4.3.7 Reorganization energy第136-138页
        4.3.8 Drift mobility第138-140页
        4.3.9 Stability第140-141页
    4.4 Conclusions第141-143页
    References第143-149页
Chapter 5: Theoretical Studies to Investigate the Effect of Different Cores on the Optical and Charge Transfer Properties of the Donor Materials toward Organic Solar Cells第149-175页
    5.1 Introduction第149-151页
    5.2 Computational methods第151-152页
    5.3 Results and Discussion第152-170页
        5.3.1 Frontier Molecular Orbitals (FMOs)第152-160页
        5.3.2 Absorption properties第160-165页
        5.3.3 Dipole Moment第165页
        5.3.4 Reorganization energy第165-167页
        5.3.5 Mobility第167-170页
    5.4 Conclusion第170-172页
    References第172-175页
Acknowledgements第175-176页
DEDICATION第176-177页
During the school, article has been (to be) published第177页

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