Repository logo
  • English
  • 中文
Log In
Have you forgotten your password?
  1. Home
  2. College of Engineering / 工學院
  3. Chemical Engineering / 化學工程學系
  4. Synthesis and spectroscopic characterization of CsPbBr3/Cs4PbBr6 perovskites synthesized via the microwave-assisted heating process for backlight display devices
 
  • Details

Synthesis and spectroscopic characterization of CsPbBr3/Cs4PbBr6 perovskites synthesized via the microwave-assisted heating process for backlight display devices

Journal
Organic Electronics
Journal Volume
91
Date Issued
2021
Author(s)
Lu C.-H
Liu Y.-H
Meena M.L
Som S.
CHUNG-HSIN LU  
DOI
10.1016/j.orgel.2021.106079
URI
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85100382507&doi=10.1016%2fj.orgel.2021.106079&partnerID=40&md5=e0aa9c4c779ff2ce641a6e217b5ddf58
https://scholars.lib.ntu.edu.tw/handle/123456789/576251
Abstract
In this study, CsPbBr3/Cs4PbBr6 composites were prepared via microwave-assisted (MA) and conventional heating (CH) routes. X-ray diffraction and high-resolution transmission electron microscopy confirmed the coexistence of CsPbBr3 and Cs4PbBr6 phases in the prepared samples. The steady-state absorption spectra of the synthesized perovskites exhibited excitonic peaks at 310 and 525 nm because of the absorption of Cs4PbBr6 and CsPbBr3, respectively. The prepared samples exhibited characteristic emission peaks at approximately 523 nm. The MA-derived sample exhibited high color purity (94%), high quantum yield (89%), and good thermal stability (>98% after 100 h of treatment). By contrast, the CH-derived sample exhibited low color purity (91%) and quantum yield (70%). Furthermore, microwave irradiation with polar molecules in MA heating resulted in the rapid generation of homogeneous heat within the heated materials, which induced the substantial nucleation and growth of CsPbBr3. This phenomenon enhanced intensity of photoluminescence emission. The MA-derived sample exhibited a shorter excitonic lifetime (20 ns) than the CH-derived sample did (32 ns) because the MA-derived sample had less nonradiative trap sites. The color gamut of the as-prepared light-emitting devices fabricated with the MA-derived sample was 125% of the NTSC. This study indicated that the incorporation of microwave heating in the synthesis process is an effective approach for preparing CsPbBr3/Cs4PbBr6 composites with a wide color gamut, good thermal stability, and a PLQY. ? 2021 Elsevier B.V.
Subjects
Bromine compounds; Color; Display devices; High resolution transmission electron microscopy; Light emission; Microwave heating; Microwave irradiation; Perovskite; Quantum yield; Thermodynamic stability; Characteristic emission; Conventional heating; Light emitting devices; Microwave assisted heating; Nucleation and growth; Photoluminescence emission; Spectroscopic characterization; Steady-state absorption; Lead compounds
Type
journal article

臺大位居世界頂尖大學之列,為永久珍藏及向國際展現本校豐碩的研究成果及學術能量,圖書館整合機構典藏(NTUR)與學術庫(AH)不同功能平台,成為臺大學術典藏NTU scholars。期能整合研究能量、促進交流合作、保存學術產出、推廣研究成果。

To permanently archive and promote researcher profiles and scholarly works, Library integrates the services of “NTU Repository” with “Academic Hub” to form NTU Scholars.

總館學科館員 (Main Library)
醫學圖書館學科館員 (Medical Library)
社會科學院辜振甫紀念圖書館學科館員 (Social Sciences Library)

開放取用是從使用者角度提升資訊取用性的社會運動,應用在學術研究上是透過將研究著作公開供使用者自由取閱,以促進學術傳播及因應期刊訂購費用逐年攀升。同時可加速研究發展、提升研究影響力,NTU Scholars即為本校的開放取用典藏(OA Archive)平台。(點選深入了解OA)

  • 請確認所上傳的全文是原創的內容,若該文件包含部分內容的版權非匯入者所有,或由第三方贊助與合作完成,請確認該版權所有者及第三方同意提供此授權。
    Please represent that the submission is your original work, and that you have the right to grant the rights to upload.
  • 若欲上傳已出版的全文電子檔,可使用Open policy finder網站查詢,以確認出版單位之版權政策。
    Please use Open policy finder to find a summary of permissions that are normally given as part of each publisher's copyright transfer agreement.
  • 網站簡介 (Quickstart Guide)
  • 使用手冊 (Instruction Manual)
  • 線上預約服務 (Booking Service)
  • 方案一:臺灣大學計算機中心帳號登入
    (With C&INC Email Account)
  • 方案二:ORCID帳號登入 (With ORCID)
  • 方案一:定期更新ORCID者,以ID匯入 (Search for identifier (ORCID))
  • 方案二:自行建檔 (Default mode Submission)
  • 方案三:學科館員協助匯入 (Email worklist to subject librarians)

Built with DSpace-CRIS software - Extension maintained and optimized by 4Science