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Fundamental Investigations of the Interactions Between Hybrid Perovskites and Amine Vapors
Fundamental Investigations of the Interactions Between Hybrid Perovskites and Amine Vapors
Fundamental Investigations of the Interactions Between Hybrid Perovskites and Amine Vapors

Detailed Information

자료유형  
 학위논문 서양
최종처리일시  
20250211151157
ISBN  
9798382720982
DDC  
540
저자명  
Serafin, Lorenzo Young.
서명/저자  
Fundamental Investigations of the Interactions Between Hybrid Perovskites and Amine Vapors
발행사항  
[Sl] : The University of North Carolina at Chapel Hill, 2024
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2024
형태사항  
111 p
주기사항  
Source: Dissertations Abstracts International, Volume: 85-11, Section: B.
주기사항  
Advisor: Cahoon, James.
학위논문주기  
Thesis (Ph.D.)--The University of North Carolina at Chapel Hill, 2024.
초록/해제  
요약Herein we present the results of a series of investigations on the interactions of hybrid perovskites with amine vapors. Building upon previous work with the deliquescence of methylammonium lead iodide with methylamine, we show that this phenomenon extends to the layered Ruddlesden-Popper variety of hybrid perovskites. Further, we report that hybrid perovskites undergo a chemical transformation when exposed to a vapor environment of mixed amine composition, resulting in the formation of a layered perovskite whose stoichiometry and structure are determined by the exact composition of the amine atmosphere. Furthermore, we performed fundamental investigations into the deliquescent behavior of hybrid perovskites with amine vapor via in situ quartz crystal microbalance measurements, showing that the perovskites proceed step-wise through a crystalline intermediate en route to full solvation. We simulated the structure of this intermediate for methylammonium lead iodide via density functional theory and corroborated the result with X-ray diffraction measurements. We also showed that changes in dissipation of the quartz crystal can be detected when an adhered methylammonium lead iodide layer was exposed to amine vapor atmospheres with varying composition, providing an indirect measure of the ratio of incorporated amines, a proxy for the ammonium cation ratio in the films that dictates structure and optoelectronic properties. Finally, we report on initial efforts to leverage these vapor interactions in attempts to grow bulk single crystals and single crystal thin films of methylammonium lead iodide.
일반주제명  
Chemistry
일반주제명  
Physical chemistry
일반주제명  
Materials science
일반주제명  
Inorganic chemistry
키워드  
Crystal growth
키워드  
Deliquescence
키워드  
Perovskite
키워드  
Quartz crystal microbalance
키워드  
Ruddlesden-Popper
키워드  
Vapor
기타저자  
The University of North Carolina at Chapel Hill Chemistry
기본자료저록  
Dissertations Abstracts International. 85-11B.
전자적 위치 및 접속  
로그인 후 원문을 볼 수 있습니다.

MARC

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■0820  ▼a540
■1001  ▼aSerafin,  Lorenzo  Young.
■24510▼aFundamental  Investigations  of  the  Interactions  Between  Hybrid  Perovskites  and  Amine  Vapors
■260    ▼a[Sl]▼bThe  University  of  North  Carolina  at  Chapel  Hill▼c2024
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2024
■300    ▼a111  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  85-11,  Section:  B.
■500    ▼aAdvisor:  Cahoon,  James.
■5021  ▼aThesis  (Ph.D.)--The  University  of  North  Carolina  at  Chapel  Hill,  2024.
■520    ▼aHerein  we  present  the  results  of  a  series  of  investigations  on  the  interactions  of  hybrid  perovskites  with  amine  vapors.  Building  upon  previous  work  with  the  deliquescence  of  methylammonium  lead  iodide  with  methylamine,  we  show  that  this  phenomenon  extends  to  the  layered  Ruddlesden-Popper  variety  of  hybrid  perovskites.  Further,  we  report  that  hybrid  perovskites  undergo  a  chemical  transformation  when  exposed  to  a  vapor  environment  of  mixed  amine  composition,  resulting  in  the  formation  of  a  layered  perovskite  whose  stoichiometry  and  structure  are  determined  by  the  exact  composition  of  the  amine  atmosphere.  Furthermore,  we  performed  fundamental  investigations  into  the  deliquescent  behavior  of  hybrid  perovskites  with  amine  vapor  via  in  situ  quartz  crystal  microbalance  measurements,  showing  that  the  perovskites  proceed  step-wise  through  a  crystalline  intermediate  en  route  to  full  solvation.  We  simulated  the  structure  of  this  intermediate  for  methylammonium  lead  iodide  via  density  functional  theory  and  corroborated  the  result  with  X-ray  diffraction  measurements.  We  also  showed  that  changes  in  dissipation  of  the  quartz  crystal  can  be  detected  when  an  adhered  methylammonium  lead  iodide  layer  was  exposed  to  amine  vapor  atmospheres  with  varying  composition,  providing  an  indirect  measure  of  the  ratio  of  incorporated  amines,  a  proxy  for  the  ammonium  cation  ratio  in  the  films  that  dictates  structure  and  optoelectronic  properties.  Finally,  we  report  on  initial  efforts  to  leverage  these  vapor  interactions  in  attempts  to  grow  bulk  single  crystals  and  single  crystal  thin  films  of  methylammonium  lead  iodide.
■590    ▼aSchool  code:  0153.
■650  4▼aChemistry
■650  4▼aPhysical  chemistry
■650  4▼aMaterials  science
■650  4▼aInorganic  chemistry
■653    ▼aCrystal  growth
■653    ▼aDeliquescence
■653    ▼aPerovskite
■653    ▼aQuartz  crystal  microbalance
■653    ▼aRuddlesden-Popper
■653    ▼aVapor
■690    ▼a0485
■690    ▼a0794
■690    ▼a0494
■690    ▼a0488
■71020▼aThe  University  of  North  Carolina  at  Chapel  Hill▼bChemistry.
■7730  ▼tDissertations  Abstracts  International▼g85-11B.
■790    ▼a0153
■791    ▼aPh.D.
■792    ▼a2024
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17161070▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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