2022年1月1日 · The similar rapid change with small amount of F4-TCNQ deposition was detected as the Fermi level shift in the ultra violet photoemission spectroscopy (UPS). The DFT calculation shows the flat lying configuration for both molecules after the structural optimization, and the difference of the charge transfer to the substrate is not large enough ...

2007年4月20日 · We have shown that the energy level alignment at the interfaces of tetrafluorotetracyanoquinodimethane (F4-TCNQ) and the substrates that span work function range from 3.45 to 5.8 eV corresponds to the Fermi level pinning regime. The Fermi level is pinned at 5.55 ± 0.1 eV as measured versus vacuum level.

2014年2月1日 · The influences of F 4 -TCNQ on the energy level alignment of Pn films were investigated by UPS. F 4 -TCNQ deposition on the ethylene/Si (1 0 0) leads to an increase in the VL by 1 eV and a decrease in the HIB by 0.6–0.8 eV.

2020年11月18日 · Acceptor doping of thiophene-based CPs with 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (F4TCNQ) has attracted significant attention owing to the deeper lowest unoccupied molecular orbital...

In order to unequivocally assign the carbon peak origin in TCNQ and to define the transitions implicated in the TCNQ molecule photoemission shake-ups, we have undertaken theoretical calculations for those TCNQ and TCNE compound solids.

传统上用于空穴传输材料 (HTM) 的吸湿性掺杂剂会严重降解钙钛矿薄膜。 众所周知的 spiro-OMeTAD HTM 的 p 型 F4-TCNQ 掺杂能够对下面的钙钛矿层进行疏水性诱导保护。 然而，F4-TCNQ 掺杂在稳定 PSC 中的机制仍不清楚。

The application of Ogre is demonstrated for an epitaxial interface of 7,7,8,8-tetracyanoquinodimethane (TCNQ) on tetrathiafulvalene (TTF), whose electronic structure has been probed by...

We report p-type doping of 2,4-bis [4- (N,N-diisobutylamino)-2,6-dihydroxyphenyl] squaraine (SQ) with 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (F4-TCNQ) by solution processing.

2010年9月20日 · We investigated the adsorbed states of 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (F4-TCNQ) on Cu (100) using high-resolution electron energy loss spectroscopy (HREELS) and ultraviolet photoelectron spectroscopy (UPS). In the case of deposition at 90 K, the workfunction change increases up to ∼1.5 eV.

苯醌(F4TCNQ) 分子表面吸附反应,可以有效消除表面氧缺陷及其电子掺杂效应. 利用同步辐射光电子能谱和X射线吸收谱原位研究了修复过程中电子结构的变化以及界面的化学反应, 发现这种 …

2016年6月27日 · In this work, we present the time-resolved spectroscopic study in TCNQ and F 4 TCNQ single crystals using femtosecond transient absorption (TA) and time-resolved fluorescence spectroscopy....

2015年11月2日 · We exposed TCNQ thin films subsequent to sodium vapour and monitored the electronic structure by surface sensitive X-ray photoelectron spectroscopy (XPS) and ultra-violet photoelectron spectroscopy (UPS). This approach has been successfully employed by us previously to study alkali insertion into inorganic materials 17 and organic materials. 11,18

2015年5月18日 · We measured the energy level of highest occupied molecular orbital (HOMO) for each doping layer using in-situ ultraviolet photoemission spectroscopy (UPS). On the basis of the energetics studies,...

In both TCNQ and TCNE, UPS spectra are characterized by the presence of a very intense broad peak (at ∼5 eV below the Fermi level). The partial density of state indicates that this intensity comes mainly from the cyano-group σ-bond (blue line is N and pink is C-cyano), justifying its presence in both samples.

这种 多腈 （英语：cyanocarbon） 是 对苯醌 的衍生物，为电子受体，用于制备 电荷转移配合物，在 分子电子学 中有所研究。 TCNQ可由 1,4-环己二酮 （英语：1,4-cyclohexanedione） 和 丙二腈 的缩合反应制备，反应中通过 溴 脱氢得到二烯： [1] 它是平面分子，有D 2h 对称性。 [2] ^ Acker, Donald S.; Hertler, Walter R. Substituted Quinodimethans. I. Preparation and Chemistry of 7,7,8,8-Tetracyanoquinodimethan.

本文通过研究在MoS 2 薄膜上修饰生长不同纳米结构的F 4 TCNQ, 来探索二维层状材料吸附有机分子对其SERS活性改变的微观相互作用机制. 研究结果表明, 不同生长时间的F 4 TCNQ/MoS 2 基底由于表面结构的不同导致其表面电子密度分布变化, 使其与吸附的探针分子之间电荷转移效率改变, 从而导致不同的SERS活性. 而生成时间为7 min的 F 4 TCNQ/MoS 2 基底由于表面具有最高的、最密集的分立F 4 TCNQ纳米岛结构, 可以有效地收集MoS 2 中的移动电子, 形成局域化电子, 从 …

We investigated how the energy levels of organic semiconducting thin films of diF-TESADT change with the F4-TCNQ dopant concentration with ultraviolet photoemission spectroscopy (UPS) and x-ray photoemission spectroscopy (XPS).

Systematic studies indicate that enhanced electrical conductivities are attributed to the increased charge carrier concentrations and mobilities and superior film morphologies of the F4-TCNQ doped FASnI 3 thin films, and decreased electrical conductivities originate from the cracks and poor film morphology of the F4-TCNQ doped FASnI 3 thin ...

2015年10月6日 · Ground-state integer charge transfer is commonly regarded as the basic mechanism of molecular electrical doping in both, conjugated polymers and oligomers. Here, we demonstrate that fundamentally...

2018年8月13日 · The UPS experiments indicated that the MTCNQ film was doped by a small excess of metal from the substrate, shifting the electron Fermi level close to the MTCNQ conduction band. Thus, the MTCNQ film becomes an n-type semiconductor, opening up a very interesting field in the technological applications of this system.