التفاصيل البيبلوغرافية
| العنوان: |
Tuning the Emission Wavelength of Lead Halide Perovskite NCs via Size and Shape Control |
| المؤلفون: |
Junfu Leng (8501067), Tian Wang (115287), Zhi-Kuang Tan (1351677), Ya-Ju Lee (3340764), Chun-Chieh Chang (491709), Kaoru Tamada (2153182) |
| سنة النشر: |
2021 |
| المجموعة: |
Smithsonian Institution: Digital Repository |
| مصطلحات موضوعية: |
Biophysics, Biochemistry, Microbiology, Biotechnology, Chemical Sciences not elsewhere classified, Information Systems not elsewhere classified, various synthesis pathways, unlike cs perovskites, two synthesis pathways, rgb primary colors, phase segregation due, impeccable luminous efficiency, external electric field, ch ( nh, based optoelectronic devices, band gap energy, quality perovskite ncs, lead perovskite ncs, stable perovskite nc, 3 , 2 , halide perovskite ncs, study could potentially, new methodology proposed, instability problem prevails, allow precise tuning, available emission wavelength, stable emission, ncs ), emission wavelength |
| الوصف: |
The advent of lead halide perovskite nanocrystals (NCs), which are easily synthesized, ultralow-cost materials and have an impeccable luminous efficiency, has drastically changed the future perspective of semiconductor quantum dot devices. Although the band gap energy of lead perovskite NCs can be tuned by the halide composition, the instability problem prevails for mixed-halide perovskite NCs, caused by phase segregation due to ion migration when an external electric field or light is applied. To avoid this problem and obtain the stable emission of RGB primary colors, in this study, two synthesis pathways of pure-halide perovskite NCs are proposed. One approach is the modified hot injection method with “centrifugation of a frozen eutectic mixture” to separate small NCs efficiently, and the other is the “low-temperature mixing and heat-up method” for target materials including CsPbI 3 , CsPbBr 3 , and CH(NH 2 ) 2 PbBr 3 (FAPbBr 3 ). The emission wavelength of FAPbBr 3 is tuned ion-stoichiometrically, unlike Cs perovskites. These various synthesis pathways of pure-halide perovskite NCs enable the efficient production of high-quality perovskite NCs and allow precise tuning of the emission color to the desired wavelength. Although there are still several “gaps” remaining in the available emission wavelength, the new methodology proposed in this study could potentially be employed for manufacturing more stable perovskite NC-based optoelectronic devices. |
| نوع الوثيقة: |
article in journal/newspaper |
| اللغة: |
unknown |
| العلاقة: |
https://figshare.com/articles/journal_contribution/Tuning_the_Emission_Wavelength_of_Lead_Halide_Perovskite_NCs_via_Size_and_Shape_Control/17139437Test |
| DOI: |
10.1021/acsomega.1c05001.s001 |
| الإتاحة: |
https://doi.org/10.1021/acsomega.1c05001.s001Test |
| حقوق: |
CC BY-NC 4.0 |
| رقم الانضمام: |
edsbas.2A03348B |
| قاعدة البيانات: |
BASE |
