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Investigating the Impact of Small Molecule Aggregation on Polaron Generation in Polymer: Y6 Organic Bulk Heterojunctions Using Optical Spectroscopy.
Investigating the Impact of Small Molecule Aggregation on Polaron Generation in Polymer: Y6 Organic Bulk Heterojunctions Using Optical Spectroscopy.
상세정보
- 자료유형
- 학위논문
- Control Number
- 0017164439
- International Standard Book Number
- 9798346389859
- Dewey Decimal Classification Number
- 620
- Main Entry-Personal Name
- Yuan, Yue.
- Publication, Distribution, etc. (Imprint
- [S.l.] : The Pennsylvania State University., 2024
- Publication, Distribution, etc. (Imprint
- Ann Arbor : ProQuest Dissertations & Theses, 2024
- Physical Description
- 204 p.
- General Note
- Source: Dissertations Abstracts International, Volume: 86-05, Section: B.
- General Note
- Advisor: Asbury, John B.
- Dissertation Note
- Thesis (Ph.D.)--The Pennsylvania State University, 2024.
- Summary, Etc.
- 요약Organic solar cells (OSCs) based on polymer donor and non-fullerene small molecule acceptor bulk heterojunctions have emerged as the leading candidates to replace the traditional inorganic solar cells for their flexibility, tailorability, and potential for low-cost manufacturing. Among the high performance OSCs, PM6:Y6 has gained a lot of attention in recent years because of its high power conversion efficiency (PCE) of over 15%. This extraordinary performance mainly comes from: 1, The complementary absorption of the donor and acceptor molecules. 2, The barrierless charge separation at the donor acceptor interfaces. Despite the rapid progress made in the organic photovoltaics (OPVs) field, a comprehensive understanding of how the materials morphology affects its optoelectronics properties like charge separation efficiency remains incomplete. Such information is essential for the future design of OPV molecules.In this dissertation, time-resolved mid-infrared (TRIR) spectroscopy is used to directly probe the polaron generation efficiency in a series of PM6:Y6 thin films with different donor acceptor weight ratios (DARs). The DAR induced Y6 aggregation change is monitored by photoluminescence spectroscopy and grazing incidence wide angle X-ray scattering. The similar trend between the polaron generation efficiency variation and the morphology variation against the DAR reveals the relation between molecular aggregation and charge separation. This work provides first direct experimental evidence for the aggregation effect on reducing the Coulomb attraction between the hole and electron in the charge transfers states and promoting charge separation.
- Subject Added Entry-Topical Term
- Silicon.
- Subject Added Entry-Topical Term
- Electrodes.
- Subject Added Entry-Topical Term
- Semiconductors.
- Subject Added Entry-Topical Term
- Aggregates.
- Subject Added Entry-Topical Term
- Voltammetry.
- Subject Added Entry-Topical Term
- Thin films.
- Subject Added Entry-Topical Term
- Industrial plant emissions.
- Subject Added Entry-Topical Term
- Advanced materials.
- Subject Added Entry-Topical Term
- Annealing.
- Subject Added Entry-Topical Term
- Polymers.
- Subject Added Entry-Topical Term
- Nuclear energy.
- Subject Added Entry-Topical Term
- Fourier transforms.
- Subject Added Entry-Topical Term
- Cadmium.
- Subject Added Entry-Topical Term
- Flexibility.
- Subject Added Entry-Topical Term
- Indium.
- Subject Added Entry-Topical Term
- Molecular structure.
- Subject Added Entry-Topical Term
- Alternative energy sources.
- Subject Added Entry-Topical Term
- Quantum dots.
- Subject Added Entry-Topical Term
- Alternative energy.
- Subject Added Entry-Topical Term
- Atmospheric sciences.
- Subject Added Entry-Topical Term
- Condensed matter physics.
- Subject Added Entry-Topical Term
- Materials science.
- Subject Added Entry-Topical Term
- Mathematics.
- Subject Added Entry-Topical Term
- Nuclear engineering.
- Subject Added Entry-Topical Term
- Nuclear physics.
- Subject Added Entry-Topical Term
- Polymer chemistry.
- Subject Added Entry-Topical Term
- Quantum physics.
- Added Entry-Corporate Name
- The Pennsylvania State University.
- Host Item Entry
- Dissertations Abstracts International. 86-05B.
- Electronic Location and Access
- 로그인을 한후 보실 수 있는 자료입니다.
- Control Number
- joongbu:654015
MARC
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■1001 ▼aYuan, Yue.
■24510▼aInvestigating the Impact of Small Molecule Aggregation on Polaron Generation in Polymer: Y6 Organic Bulk Heterojunctions Using Optical Spectroscopy.
■260 ▼a[S.l.]▼bThe Pennsylvania State University. ▼c2024
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2024
■300 ▼a204 p.
■500 ▼aSource: Dissertations Abstracts International, Volume: 86-05, Section: B.
■500 ▼aAdvisor: Asbury, John B.
■5021 ▼aThesis (Ph.D.)--The Pennsylvania State University, 2024.
■520 ▼aOrganic solar cells (OSCs) based on polymer donor and non-fullerene small molecule acceptor bulk heterojunctions have emerged as the leading candidates to replace the traditional inorganic solar cells for their flexibility, tailorability, and potential for low-cost manufacturing. Among the high performance OSCs, PM6:Y6 has gained a lot of attention in recent years because of its high power conversion efficiency (PCE) of over 15%. This extraordinary performance mainly comes from: 1, The complementary absorption of the donor and acceptor molecules. 2, The barrierless charge separation at the donor acceptor interfaces. Despite the rapid progress made in the organic photovoltaics (OPVs) field, a comprehensive understanding of how the materials morphology affects its optoelectronics properties like charge separation efficiency remains incomplete. Such information is essential for the future design of OPV molecules.In this dissertation, time-resolved mid-infrared (TRIR) spectroscopy is used to directly probe the polaron generation efficiency in a series of PM6:Y6 thin films with different donor acceptor weight ratios (DARs). The DAR induced Y6 aggregation change is monitored by photoluminescence spectroscopy and grazing incidence wide angle X-ray scattering. The similar trend between the polaron generation efficiency variation and the morphology variation against the DAR reveals the relation between molecular aggregation and charge separation. This work provides first direct experimental evidence for the aggregation effect on reducing the Coulomb attraction between the hole and electron in the charge transfers states and promoting charge separation.
■590 ▼aSchool code: 0176.
■650 4▼aSilicon.
■650 4▼aElectrodes.
■650 4▼aSemiconductors.
■650 4▼aAggregates.
■650 4▼aVoltammetry.
■650 4▼aThin films.
■650 4▼aIndustrial plant emissions.
■650 4▼aAdvanced materials.
■650 4▼aAnnealing.
■650 4▼aPolymers.
■650 4▼aNuclear energy.
■650 4▼aFourier transforms.
■650 4▼aCadmium.
■650 4▼aFlexibility.
■650 4▼aIndium.
■650 4▼aMolecular structure.
■650 4▼aAlternative energy sources.
■650 4▼aQuantum dots.
■650 4▼aAlternative energy.
■650 4▼aAtmospheric sciences.
■650 4▼aCondensed matter physics.
■650 4▼aMaterials science.
■650 4▼aMathematics.
■650 4▼aNuclear engineering.
■650 4▼aNuclear physics.
■650 4▼aPolymer chemistry.
■650 4▼aQuantum physics.
■690 ▼a0363
■690 ▼a0725
■690 ▼a0611
■690 ▼a0794
■690 ▼a0405
■690 ▼a0552
■690 ▼a0756
■690 ▼a0495
■690 ▼a0599
■71020▼aThe Pennsylvania State University.
■7730 ▼tDissertations Abstracts International▼g86-05B.
■790 ▼a0176
■791 ▼aPh.D.
■792 ▼a2024
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17164439▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
