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Organic Molecules with Delayed Fluorescence Applied to Human-Centric Lighting and Radiation Detectors
Organic Molecules with Delayed Fluorescence Applied to Human-Centric Lighting and Radiatio...
Organic Molecules with Delayed Fluorescence Applied to Human-Centric Lighting and Radiation Detectors

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자료유형  
 학위논문 서양
최종처리일시  
20260202105521
ISBN  
9798263338763
DDC  
600
저자명  
Moreno, Oliver D.
서명/저자  
Organic Molecules with Delayed Fluorescence Applied to Human-Centric Lighting and Radiation Detectors
발행사항  
[Sl] : Georgia Institute of Technology, 2024
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2024
형태사항  
173 p
주기사항  
Source: Dissertations Abstracts International, Volume: 87-05, Section: A.
주기사항  
Advisor: Kippelen, Bernard.
학위논문주기  
Thesis (Ph.D.)--Georgia Institute of Technology, 2024.
초록/해제  
요약This research explores the class of organic molecules exhibiting thermally activated delayed fluorescence and their application to wavelength-shifting light converters and scintillators through stereolithography. This document begins by establishing the motivation for this work as well as the historical context in the literature.This thesis explores the fundamentals of lighting physics, recent developments in lighting science, and the open challenges rooted in the photophysics of materials. The research program conducted to address those challenges is discussed, resulting in a proposed set of metrics to better benchmark light sources, and a proposed light source that is color tunable through correlated color temperature (CCT) values ranging from 4,277 K to 22,333 K with color gamut index Rg values within 3%, IES color fidelity index Rf values within 7% of the natural light reference illuminant. The efficiency metrics pertaining to circadian lighting performance remain within 10% of those of the natural light reference illuminant over the same CCT range. Applications of this light source technology are explored in the context of advancing the state-of-the-art towards fully 3D-printed network connected lighting systems that reach power efficiency beyond 390 lmW-1.The second half of this thesis focuses on ionizing radiation detection. The basic architectures of detectors for different energies and open challenges in the field are discussed. Advances made towards 3D-printable plastic scintillators are discussed, and the performance enhancements resulting from loading the scintillator with molecules exhibiting thermally activated delayed fluorescence and high-Z materials for improved capture cross-section, achieving 662 keV resolution. The application of these scintillators and wavelength shifting-light converters towards detector systems for nuclear nonproliferation systems are highlighted, including monitoring through unmanned vehicles and remote large-volume detectors relevant to particle physics. Spectral overlap is projected to be improved by a factor exceeding 2.
일반주제명  
Mechanical properties
일반주제명  
Lighting systems
일반주제명  
User experience
일반주제명  
Rare earth elements
일반주제명  
Gamma rays
일반주제명  
Light emitting diodes
일반주제명  
Nuclear security
일반주제명  
Carbon footprint
일반주제명  
Radiation detectors
일반주제명  
Digitization
일반주제명  
Energy
일반주제명  
Optics
일반주제명  
Particle physics
일반주제명  
Electrical engineering
일반주제명  
Industrial engineering
일반주제명  
Mechanics
일반주제명  
Nuclear physics
기타저자  
Georgia Institute of Technology.
기본자료저록  
Dissertations Abstracts International. 87-05A.
전자적 위치 및 접속  
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MARC

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■1001  ▼aMoreno,  Oliver  D.
■24510▼aOrganic  Molecules  with  Delayed  Fluorescence  Applied  to  Human-Centric  Lighting  and  Radiation  Detectors
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■520    ▼aThis  research  explores  the  class  of  organic  molecules  exhibiting  thermally  activated  delayed  fluorescence  and  their  application  to  wavelength-shifting  light  converters  and  scintillators  through  stereolithography.  This  document  begins  by  establishing  the  motivation  for  this  work  as  well  as  the  historical  context  in  the  literature.This  thesis  explores  the  fundamentals  of  lighting  physics,  recent  developments  in  lighting  science,  and  the  open  challenges  rooted  in  the  photophysics  of  materials.  The  research  program  conducted  to  address  those  challenges  is  discussed,  resulting  in  a  proposed  set  of  metrics  to  better  benchmark  light  sources,  and  a  proposed  light  source  that  is  color  tunable  through  correlated  color  temperature  (CCT)  values  ranging  from  4,277  K  to  22,333  K  with  color  gamut  index  Rg  values  within  3%,  IES  color  fidelity  index  Rf  values  within  7%  of  the  natural  light  reference  illuminant.  The  efficiency  metrics  pertaining  to  circadian  lighting  performance  remain  within  10%  of  those  of  the  natural  light  reference  illuminant  over  the  same  CCT  range.  Applications  of  this  light  source  technology  are  explored  in  the  context  of  advancing  the  state-of-the-art  towards  fully  3D-printed  network  connected  lighting  systems  that  reach  power  efficiency  beyond  390  lmW-1.The  second  half  of  this  thesis  focuses  on  ionizing  radiation  detection.  The  basic  architectures  of  detectors  for  different  energies  and  open  challenges  in  the  field  are  discussed.  Advances  made  towards  3D-printable  plastic  scintillators  are  discussed,  and  the  performance  enhancements  resulting  from  loading  the  scintillator  with  molecules  exhibiting  thermally  activated  delayed  fluorescence  and  high-Z  materials  for  improved  capture  cross-section,  achieving  662  keV  resolution.  The  application  of  these  scintillators  and  wavelength  shifting-light  converters  towards  detector  systems  for  nuclear  nonproliferation  systems  are  highlighted,  including  monitoring  through  unmanned  vehicles  and  remote  large-volume  detectors  relevant  to  particle  physics.  Spectral  overlap  is  projected  to  be  improved  by  a  factor  exceeding  2.
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■650  4▼aLighting  systems
■650  4▼aUser  experience
■650  4▼aRare  earth  elements
■650  4▼aGamma  rays
■650  4▼aLight  emitting  diodes
■650  4▼aNuclear  security
■650  4▼aCarbon  footprint
■650  4▼aRadiation  detectors
■650  4▼aDigitization
■650  4▼aEnergy
■650  4▼aOptics
■650  4▼aParticle  physics
■650  4▼aElectrical  engineering
■650  4▼aIndustrial  engineering
■650  4▼aMechanics
■650  4▼aNuclear  physics
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■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17360416▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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