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1篇 您的检索式：作者名="Csaba Janaky"

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		题名	作者	年代	出处	被引量
	1	Peeling off the surface: Pt-decoration of WSe 2 nanoflakes results in exceptional photoelectrochemical HER activity显示文摘Photoelectrochemical(PEC)hydrogen evolution reaction(HER)was studied on exfoliated,pristine and Pt-decorated tungsten diselenide(p-WSe_(2))nanoflake samples,using a previously developed microdroplet PEC microscopy approach.The WSe 2 nanoflakes had well-defined thicknesses as measured by atomic force microscopy,and the Pt nanoparticles(NPs)were deposited by a variable num-ber of atomic layer deposition(ALD)cycles.An exceptionally high photocurrent density of 49.6 mA cm^(−2)(under 220 mW cm^(−2) irradiation)and internal-photon-to-electron-conversion efficiency(∼90%at 550 nm)were demonstrated on these Pt-decorated WSe_(2)(WSe_(2)-Pt)photocathodes.The Pt NP loading and thickness of WSe_(2) nanoflakes(in the 24–235 nm range)were used to fine-tune their PEC activity for HER.We found similar charge transfer and surface recombination kinetics of pristine and WSe_(2)-Pt specimens(as assessed by intensity-modulated photocurrent spectroscopy),which indicated significant differences in their bulk properties.X-ray and ultraviolet photoelectron spectroscopies were performed to identify defect states and quantify the density of states around the valence band of WSe_(2).The elevated temperature of the ALD process and the evolving Pt NP phase conspired to passivate the sub-surface(i.e.,bulk)defects in the WSe_(2) nanoflakes,resulting in their vastly improved PEC performance.	Peter S.Toth Gabor Szabo Gabor Bencsik Gergely F.Samu Krishnan Rajeshwar Csaba Janaky	2022	SusMat2022，2，6：	0

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