›› 2014, Vol. 23 ›› Issue (9): 96101-096101.doi: 10.1088/1674-1056/23/9/096101
• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇 下一篇
刘静a b, 王嘉鸥a, 伊福廷a, 吴蕊a, 张念a b, 奎热西a
Liu Jing (刘静)a b, Wang Jia-Ou (王嘉鸥)a, Yi Fu-Ting (伊福廷)a, Wu Rui (吴蕊)a, Zhang Nian (张念)a b, Ibrahim Kurash (奎热西)a
摘要: Silicon nanopillars are fabricated by inductively coupled plasma (ICP) dry etching with the cesium chloride (CsCl) islands as masks originally from self-assembly. Wafers with nanopillar texture or planar surface are subjected to phosphorus (P) diffusion by liquid dopant source (POCl3) at 870℃ to form P-N junctions with a depth of 300 nm. The X-ray photoelectron spectroscopy (XPS) is used to measure the Si 2p core levels of P-N junction wafer with nanopillar texture and planar surface. With a visible light excitation, the P-N junction produces a new electric potential for photoelectric characteristic, which causes the Si 2p core level to have a energy shift compared with the spectrum without the visible light. The energy shift of the Si 2p core level is -0.27 eV for the planar P-N junction and-0.18 eV for the nanopillar one. The difference in Si 2p energy shift is due to more space lattice defects and chemical bond breaks for nanopillar compared with the planar one.
中图分类号: (X-ray diffraction)