Growth of Large‐Sized 2D Ultrathin SnSe Crystals with In‐Plane ...
2023年2月14日 · In this work, we report the low-pressure PVD synthesis of high-quality 2D SnSe crystals with thinner thickness and larger lateral sizes. The as-synthesized SnSe displays high crystallinity and phase purity, as confirmed by Raman, X-ray photoemission spectroscopy (XPS), and scanning transmission electron ((micro-scopy)) (STEM).
Two-dimensional multiferroic material of metallic p-doped SnSe
2022年10月17日 · Here, we develop a physical vapor deposition approach to synthesize two-dimensional p-doped SnSe. The local phase segregation of SnSe 2 microdomains and accompanying interfacial charge transfer...
ACS Nano：2D SnSe的晶圆级制备，用于范德华半导体宽带光电探 …
2023年1月28日 · 图2a-c显示了在最佳条件下合成的SnSe层的XPS光谱和反卷积Sn 3d和Se 3d核心能级光谱。 可以识别出四种化学元素，包括SnSe中的Sn、Se和残基中的O和C。 通过XPS深度剖面和顺序Ar + 刻蚀监测了2D SnSe多层薄膜的XPS Sn 3d核心能级光谱的演变，证实了Sn 4+ 氧化 …
Synthesis and Surface-Enhanced Raman Scattering of Ultrathin SnSe
2018年7月10日 · In this work, we have successfully synthesized large-scale ultrathin SnSe 2 nanoflakes of high quality on mica substrates employing Se and SnSe powder as precursors. SnSe with an appropriate melting point as a tin source does not introduce new impurities and guarantees the synthesis of ultrathin SnSe 2 nanoflakes.
High-Performance n -type SnSe Thermoelectric Polycrystal Prepared by ...
2020年12月3日 · We use inelastic neutron scattering (INS) to show that locally the lattice dynamics matches earlier reports of SnSe single crystals. X-ray photoelectron spectroscopy (XPS) is used to investigate the surface oxidation by air exposure.
XPS spectrum SnSe thin film deposited on FTO film substrate
An enhanced photocurrent was observed for solvothermally prepared SnSe (ST-SnSe) in comparison to electrochemically deposited SnSe (ED-SnSe) film. Efficiencies (η) of 0.62% and 1.25% were...
Determining the oxidation stability of SnSe under ... - Springer
2024年9月19日 · Tin selenide (SnSe) lattice structure is largely unaffected by long-term atmospheric exposure, with x-ray photoelectron spectroscopy (XPS) depth profiles showing a predominant 1:1 Sn:Se stoichiometry both before and after exposure.
Divacancy and resonance level enables high thermoelectric
2024年5月18日 · X-ray photoelectron spectroscopy (XPS) on the SnSe 0.92 + 0.03WCl 6 sample was performed to determine the ionic states of elements (Fig. 2e, f).
XPS spectra of SnSe2 for typical survey (a), Sn 3d (b) and Se 3d (c ...
Stoichiometric tin diselenide (SnSe2) platelet crystals have been prepared by physical vapor deposition (PVD) method under high vacuum (~ 10–6 mbar) using a homemade dual-zone furnace. The driving...
SnSex薄膜中SnSe与SnSe2两相调控机理研究 - 汉斯出版社
摘要: 本论文利用分子束外延技术在BaF 2 (111)衬底上制备了SnSe x 薄膜，并利用拉曼光谱和X光电子能谱(XPS)对SnSe x 薄膜中SnSe、SnSe 2 两组分的调控机理进行了系统研究，研究结果表明当锡硒原子比率Sn/Se ≈ 1时，以250℃和300℃衬底温度制备的SnSe x 薄膜均存在SnSe和SnSe ...