The Energy Level Conundrum of Organic Semiconductors in Solar Cells
Sign Up to like & getrecommendations! Published in 2022 at "Advanced Materials"
DOI: 10.1002/adma.202202575
Abstract: The frontier molecular energy levels of organic semiconductors are decisive for their fundamental function and efficiency in optoelectronics. However, the precise determination of these energy levels and their variation when using different techniques makes it… read more here.
Keywords: energy levels; spectroscopy; solar cells; energy ... See more keywords
Relating Frontier Orbital Energies from Voltammetry and Photoelectron Spectroscopy to the Open-Circuit Voltage of Organic Solar Cells
Sign Up to like & getrecommendations! Published in 2019 at "Advanced Energy Materials"
DOI: 10.1002/aenm.201803677
Abstract: For 19 diketopyrrolopyrrole polymers, the highest occupied molecular orbital (HOMO) energies are determined from i) the oxidation potential with square-wave voltammetry (SWV), ii) the ionization potential using ultraviolet photoelectron spectroscopy (UPS), and iii) density functional… read more here.
Keywords: open circuit; spectroscopy; photoelectron spectroscopy; circuit voltage ... See more keywords
Potential Screening at Electrode/Ionic Liquid Interfaces from In Situ X‐ray Photoelectron Spectroscopy
Sign Up to like & getrecommendations! Published in 2019 at "ChemistryOpen"
DOI: 10.1002/open.201900211
Abstract: Abstract A new approach to investigate potential screening at the interface of ionic liquids (ILs) and charged electrodes in a two‐electrode electrochemical cell by in situ X‐ray photoelectron spectroscopy has been introduced. Using identical electrodes, we… read more here.
Keywords: potential screening; ray photoelectron; situ ray; spectroscopy ... See more keywords
Atomic configurations in AP-MOVPE grown lattice-mismatched InGaAsN films unravelled by X-ray photoelectron spectroscopy combined with bulk and surface characterization techniques
Sign Up to like & getrecommendations! Published in 2018 at "Applied Surface Science"
DOI: 10.1016/j.apsusc.2017.10.032
Abstract: Abstract This work presents the results of X-ray photoelectron spectroscopy studies on the bonding N configuration in InGaAsN epilayers grown by atmospheric pressure metal organic vapour phase epitaxy. Growth temperature has been tuned in order… read more here.
Keywords: ingaasn films; surface; spectroscopy; ray photoelectron ... See more keywords
Barrier heights of Au, Pt, Pd, Ir, Cu on nitrogen terminated (1 0 0) diamond determined by X-ray photoelectron spectroscopy
Sign Up to like & getrecommendations! Published in 2018 at "Applied Surface Science"
DOI: 10.1016/j.apsusc.2018.06.184
Abstract: Abstract In this work, we used X-ray photoelectron spectroscopy to measure barrier height values for different metals (Au, Pt, Pd, Ir, Cu) on nitrogen terminated (1 0 0) diamond. Three types of diamond surface (hydrogen-, oxygen-, fluorine-terminated… read more here.
Keywords: nitrogen terminated; diamond; terminated diamond; spectroscopy ... See more keywords
X-ray photoelectron spectroscopy and rotating disk electrode measurements of smooth sputtered Fe-N-C films
Sign Up to like & getrecommendations! Published in 2020 at "Applied Surface Science"
DOI: 10.1016/j.apsusc.2020.146012
Abstract: Abstract Electrocatalysts for the oxygen reduction reaction (ORR) based on complexes of iron and nitrogen in a carbon matrix (Fe-N-C) are a promising alternative to platinum group metal (PGM) based catalysts in polymer electrolyte membrane… read more here.
Keywords: rotating disk; carbon; disk electrode; spectroscopy ... See more keywords
Effect of etching on the oxidation of zinc selenide surfaces characterized by X-ray photoelectron spectroscopy
Sign Up to like & getrecommendations! Published in 2020 at "Applied Surface Science"
DOI: 10.1016/j.apsusc.2020.146604
Abstract: Abstract The surface chemistry of zinc selenide (ZnSe) was studied by X-ray photoelectron spectroscopy (XPS) as a function of various surface treatments, including etching in solutions of hydrochloric acid (HCl), potassium permanganate:sulfuric acid (KMnO4:H2SO4), and… read more here.
Keywords: surface; spectroscopy; ray photoelectron; photoelectron spectroscopy ... See more keywords
On the X-ray photoelectron spectroscopy analysis of LiNixMnyCozO2 material and electrodes
Sign Up to like & getrecommendations! Published in 2021 at "Applied Surface Science"
DOI: 10.1016/j.apsusc.2020.147699
Abstract: Abstract X-ray photoelectron spectroscopy (XPS) is a widely used technique to study surface chemistry and ageing mechanisms of LiNixMnyCozO2 (NMC) based cathodes of lithium ion batteries. Analysis of the literature, however, reveals common problems in… read more here.
Keywords: photoelectron spectroscopy; spectroscopy; spectroscopy analysis; ray photoelectron ... See more keywords
Time-resolved photoelectron spectroscopy of nitrobenzene and its aldehydes
Sign Up to like & getrecommendations! Published in 2018 at "Chemical Physics Letters"
DOI: 10.1016/j.cplett.2017.11.011
Abstract: Abstract We report the first femtosecond time-resolved photoelectron spectroscopy study of 2-, 3- and 4-nitrobenzaldehyde (NBA) and nitrobenzene (NBE) in the gas phase upon excitation at 200 nm. In 3- and 4-NBA, the dynamics follow fast… read more here.
Keywords: nitrobenzene; resolved photoelectron; time resolved; spectroscopy ... See more keywords
Ionization energy and thermochemistry of CF2Cl2 determined from threshold photoelectron spectroscopy
Sign Up to like & getrecommendations! Published in 2021 at "Chemical Physics Letters"
DOI: 10.1016/j.cplett.2021.138631
Abstract: Abstract In this work, we performed a joint study of threshold photoelectron spectroscopy and density functional calculations on photoionization of CF2Cl2. Using the optimized geometries and vibrational frequencies of the CF2Cl2 neutral and cation in… read more here.
Keywords: threshold photoelectron; spectroscopy; cf2cl2; photoelectron spectroscopy ... See more keywords
About charging and referencing of core level data obtained from X-ray photoelectron spectroscopy analysis of the ionic liquid/ultrahigh vacuum interface
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Electron Spectroscopy and Related Phenomena"
DOI: 10.1016/j.elspec.2017.06.007
Abstract: Abstract The ionic liquid [EMIM][TFSI] was investigated by X-ray Photoelectron Spectroscopy (XPS) on different substrates, ranging from metallic to semiconductor type materials. Parallel angle-resolved XPS was performed utilising a wide-angle lens hemispherical analyser with an… read more here.
Keywords: ionic liquid; spectroscopy; ray photoelectron; photoelectron spectroscopy ... See more keywords