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Understanding the synthetic pathway of a single-phase quarternary semiconductor using surface-enhanced raman scattering : a case of Wurtzite Cu2ZnSnS4 nanoparticles

หน่วยงาน Nanyang Technological University, Singapore

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ชื่อเรื่อง : Understanding the synthetic pathway of a single-phase quarternary semiconductor using surface-enhanced raman scattering : a case of Wurtzite Cu2ZnSnS4 nanoparticles
นักวิจัย : Tan, Joel Ming Rui , Lee, Yih Hong , Pedireddy, Srikanth , Baikie, Tom , Ling, Xing Yi , Wong, Lydia Helena
คำค้น : DRNTU::Science::Chemistry
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2557
อ้างอิง : Tan, J. M. R., Lee, Y. H., Pedireddy, S., Baikie, T., Ling, X. Y., & Wong, L. H. (2014). Understanding the synthetic pathway of a single-phase quarternary semiconductor using surface-enhanced raman scattering : a case of Wurtzite Cu2ZnSnS4 nanoparticles. Journal of the American chemical society, 136(18), 6684-6692. , http://hdl.handle.net/10220/24355 , http://dx.doi.org/10.1021/ja501786s
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : Journal of the American chemical society
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

Single-phase Cu2ZnSnS4 (CZTS) is an essential prerequisite toward a high-efficiency thin-film solar cell device. Herein, the selective phase formation of single-phase CZTS nanoparticles by ligand control is reported. Surface-enhanced Raman scattering (SERS) spectroscopy is demonstrated for the first time as a characterization tool for nanoparticles to differentiate the mixed compositional phase (e.g., CZTS, CTS, and ZnS), which cannot be distinguished by X-ray diffraction. Due to the superior selectivity and sensitivity of SERS, the growth mechanism of CZTS nanoparticle formation by hot injection is revealed to involve three growth steps. First, it starts with nucleation of Cu2–xS nanoparticles, followed by diffusion of Sn4+ into Cu2–xS nanoparticles to form the Cu3SnS4 (CTS) phase and diffusion of Zn2+ into CTS nanoparticles to form the CZTS phase. In addition, it is revealed that single-phase CZTS nanoparticles can be obtained via balancing the rate of CTS phase formation and diffusion of Zn2+ into the CTS phase. We demonstrate that this balance can be achieved by 1 mL of thiol with Cu(OAc)2, Sn(OAc)4, and Zn(acac)2 metal salts to synthesize the CZTS phase without the presence of a detectable binary/ternary phase with SERS.

NRF (Natl Research Foundation, S’pore)

บรรณานุกรม :
Tan, Joel Ming Rui , Lee, Yih Hong , Pedireddy, Srikanth , Baikie, Tom , Ling, Xing Yi , Wong, Lydia Helena . (2557). Understanding the synthetic pathway of a single-phase quarternary semiconductor using surface-enhanced raman scattering : a case of Wurtzite Cu2ZnSnS4 nanoparticles.
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Tan, Joel Ming Rui , Lee, Yih Hong , Pedireddy, Srikanth , Baikie, Tom , Ling, Xing Yi , Wong, Lydia Helena . 2557. "Understanding the synthetic pathway of a single-phase quarternary semiconductor using surface-enhanced raman scattering : a case of Wurtzite Cu2ZnSnS4 nanoparticles".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Tan, Joel Ming Rui , Lee, Yih Hong , Pedireddy, Srikanth , Baikie, Tom , Ling, Xing Yi , Wong, Lydia Helena . "Understanding the synthetic pathway of a single-phase quarternary semiconductor using surface-enhanced raman scattering : a case of Wurtzite Cu2ZnSnS4 nanoparticles."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2557. Print.
Tan, Joel Ming Rui , Lee, Yih Hong , Pedireddy, Srikanth , Baikie, Tom , Ling, Xing Yi , Wong, Lydia Helena . Understanding the synthetic pathway of a single-phase quarternary semiconductor using surface-enhanced raman scattering : a case of Wurtzite Cu2ZnSnS4 nanoparticles. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2557.