Bismuth-content-dependent polarized Raman spectrum of InPBi alloy

Guan-Nan Wei, Qing-Hai Tan, Xing Dai, Qi Feng, Wen-Gang Luo, Yu Sheng, Kai Wang, Wen-Wu Pan, Li-Yao Zhang, Shu-Min Wang, Kai-You Wang

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6 Citations (Scopus)


We systematically investigate the optical properties of the InP1−x Bi x ternary alloys with 0 ≤ x ≤ 2.46%, by using high resolution polarized Raman scattering measurement. Both InP-like and InBi-like optical vibration modes (LO) are identified in all the samples, suggesting that most of the Bi-atoms are incorporated into the lattice sites to substitute P-atoms. And the intensity of the InBi-like Raman mode is positively proportional to the Bi-content. Linear red-shift of the InP-like longitudinal optical vibration mode is observed to be 1.1 cm−1/Bi%, while that of the InP-like optical vibration overtone (2LO) is nearly doubled. In addition, through comparing the Z(XX) and Z(XY) Raman spectra, longitudinal-optical-plasmon-coupled (LOPC) modes are identified in all the samples, and their intensities are found to be proportional to the electron concentrations.

Original languageEnglish
Article number066301
Number of pages6
JournalChinese Physics B
Issue number6
Publication statusPublished - Jun 2016
Externally publishedYes


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