J
John F. Watts
Researcher at University of Surrey
Publications - 360
Citations - 10635
John F. Watts is an academic researcher from University of Surrey. The author has contributed to research in topics: X-ray photoelectron spectroscopy & Adsorption. The author has an hindex of 46, co-authored 351 publications receiving 9316 citations. Previous affiliations of John F. Watts include Lebanese University & Umm al-Qura University.
Papers
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Journal ArticleDOI
Enhanced photovoltage for inverted planar heterojunction perovskite solar cells
Deying Luo,Wenqiang Yang,Zhiping Wang,Aditya Sadhanala,Qin Hu,Rui Su,Ravichandran Shivanna,Gustavo F. Trindade,John F. Watts,Zhaojian Xu,Tanghao Liu,Ke Chen,Fengjun Ye,Pan Wu,Lichen Zhao,Jiang Wu,Yongguang Tu,Yifei Zhang,Xiao-Yu Yang,Wei Zhang,Richard H. Friend,Qihuang Gong,Qihuang Gong,Henry J. Snaith,Rui Zhu,Rui Zhu +25 more
TL;DR: This approach produces a wider bandgap top layer and a more n-type perovskite film, which mitigates nonradiative recombination, leading to an increase in Voc by up to 100 millivolts, which led to a stabilized power output approaching 21% at the maximum power point.
Book
An Introduction to Surface Analysis by XPS and AES
John F. Watts,John Wolstenholme +1 more
TL;DR: In this article, the authors present a comparison of XPS and AES with other analytical techniques. But they do not discuss the application of the XPS in the field of materials science.
Journal ArticleDOI
Surface modification of poly(vinylidene fluoride) by alkaline treatment1. The degradation mechanism
TL;DR: In this paper, a detailed study of the alkaline degradation of PVdF has been carried out by X-ray photoelectron spectroscopy, secondary ion mass spectrometry and Raman spectrographs to determine the composition of the modified layer.
Journal ArticleDOI
The role of the interphase in the environmental failure of adhesive joints
TL;DR: In this paper, the cyclic fatigue behavior of an aerospace-grade epoxy-adhesive bonding aluminium-alloy substrates was investigated and the relationship between the rate of fatigue crack growth per cycle, da/dN, and the maximum strain-energy release rate, Gmax, applied during the fatigue cycle.
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XPS investigation of monatomic and cluster argon ion sputtering of tantalum pentoxide
TL;DR: In this article, the ability of argon cluster ions (Arn+) to etch metal oxides and other technologically important inorganic compounds has been reported, but no depth profiles have previously been reported.