Synthesis of InP nanocrystals using triphenyl phosphite as phosphorus source

Commercially viable synthesis of InP nanocrystals (NCs) involves highly pyrophoric phosphorus (P) precursor, tris(trimethylsilyl) phosphine (TMS 3 P). Finding a cheap and safe alternative would be the holy grail. We report the synthesis of InP NCs using triphenyl phosphite, an inexpensive and relati...

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Bibliographic Details
Published in:The Korean journal of chemical engineering 2019, 36(9), 234, pp.1518-1526
Main Authors: Lee, Dongkyu, Koh, Sungjun, Yoon, Da-Eun, Lee, Sooho, Kim, Whi Dong, Kim, Dahin, Bae, Wan Ki, Lim, Jaehoon, Lee, Doh C.
Format: Article
Language:English
Subjects:
Absorption spectra
Biotechnology
Catalysis
Chemistry
Chemistry and Materials Science
Electronic
Indium phosphides
Industrial Chemistry/Chemical Engineering
Inorganic
Mass spectrometry
Material (Organic
Materials Science
Nanocrystals
NMR
Nuclear magnetic resonance
Phosphorus
Photoluminescence
Precursors
Quantum confinement
Synthesis
Thin Films
Zinc chloride
화학공학
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Summary:Commercially viable synthesis of InP nanocrystals (NCs) involves highly pyrophoric phosphorus (P) precursor, tris(trimethylsilyl) phosphine (TMS 3 P). Finding a cheap and safe alternative would be the holy grail. We report the synthesis of InP NCs using triphenyl phosphite, an inexpensive and relatively safe phosphorous source. By reacting indium chloride and triphenyl phosphite, we obtained large-sized and black-colored InP NCs, yet without any distinct feature that shows quantum confinement effect. Addition of ZnCl 2 resulted in InP NCs with controlled size, which was manifested in the shift of 1S peak in absorption spectra. By coating ZnS shell on InP NCs, we achieved photoluminescence with some extent of trap emission, showing maximum total quantum yield (QY) of 23% (8% of band-edge emission QY). We used 31 P nuclear magnetic resonance (NMR), diffusion-ordered spectroscopy (DOSY), and mass spectrometry (MS) to assign intermediates and following mechanisms of the InP synthesis using triphenyl phosphite. The development of this safe and cost-effective P precursor opens broader opportunity space for large-scale production of InP NC.
ISSN:0256-1115
1975-7220
DOI:10.1007/s11814-019-0344-5