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| Type |
Poster Presentation |
| Area |
고분자화학 |
| Room No. |
포스터발표장 |
| Time |
4월 21일 (금요일) 13:00~14:30 |
| Code |
POLY.P-47 |
| Subject |
Room-Temperature Synthesis of Bright Fluorescent Thermal Stable and Color Tunable Formamidinium Lead Halide Perovskites Nanocrystals: A Better Candidate for Optoelectronic devices |
| Authors |
NGUYEN MINH DUONG, 강영종1,*
한양대학교 화학과, Korea
1한양대학교 자연과학대학 화학과, Korea
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| Abstract |
Perovskite lead halide nanocrystals have been researched intensively within the last few years due to the fascinating optical properties, such as, high photoluminescence quantum yield (PLQY) reach almost 100%, narrow full-width half maximum (FWHM) less than 30nm, color tunable cover the whole visible spectra, low cost and possible solution process, potential to be newcomer class in light emitting diodes (LEDs) devices. Perovskite lead halide nanocrystals has the common formula APbX3 (X=Cl, Br and I), whereas A can be only three cations, methylammonium (MA), cesium (Cs) and formamidinium (FA) to maintain the crystal structure of perovskite materials. For last two years, MAPbX3 and CsPbX3 have been synthesized successful and proved their promise as a possible material to be commercialized in LED devices. However, it still challenges and lacks a method to synthesize the last perovskites family member FAPbX3 with the color tunable. Although, it is estimated that FAPbX3 is a better material compare with MAPbX3, according to the smaller band gap improved light-harvesting, and higher thermal stability in solar cell. In this work, we first time provide a new precursor materials to synthesize successful FAPbX3 nanocrystals at room temperature, with color tunable up to infrared region (408-784nm), narrow FWHM (18-48nm), high PLQY up to 75% and higher thermal stability compare with conventional MAPbX3 nanocrystals. Our work will open a new class in perovskite nanocrystals, providing a promising candidate for optoelectronic devices. |
| E-mail |
minhduong92@gmail.com |
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119th General Meeting of the KCS