화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Chemical Engineering, Vol.36, No.9, 1518-1526, September, 2019
DOI10.1007/s11814-019-0344-5  Export Citation
Synthesis of InP nanocrystals using triphenyl phosphite as phosphorus source
Dongkyu Lee, Sungjun Koh, Da-Eun Yoon, Sooho Lee, Whi Dong Kim, Dahin Kim, Wan Ki Bae1, Jaehoon Lim2, and Doh C. Lee†
  • Department of Chemical and Biomolecular Engineering (BK21+ Program), KAIST Institute for the Nanocentury, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
  • 1SKKU Advanced Institute of Nano Technology, Sungkyunkwan University, Gyeonggi 16419, Korea
  • 2Department of Chemical Engineering and Department of Energy System Research, Ajou University, Suwon 16499, Korea
E-mail:
Commercially viable synthesis of InP nanocrystals (NCs) involves highly pyrophoric phosphorus (P) precursor, tris(trimethylsilyl) phosphine (TMS3P). 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 ZnCl2 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 31P 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.
Keywords:InP Nanocrystals;Triphenyl Phosphite;Phosphorus Precursor
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