Solar UV index and UV dose determination with photochromic hackmanites: from the assessment of the fundamental properties to the device

Abstract

The activation energy of nature-inspired hackmanites was tuned, adapting this material for UV detection.

Unravelling the Origin of the Yellow-Orange Luminescence in Natural and Synthetic Scapolites

“…λexc = 254 nm). The origin of this property is often related to the presence of (S2)centers by comparison with other aluminosilicates (sodalite, tugtupite, …) 31,32 in which yellow-orange luminescence is also observed with similar characteristics. 33 Hence, unravelling the origin of the luminescence in scapolite could be an indirect progress in the study of its photochromism.…”

Recent Advances and a Roadmap to Wearable UV Sensor Technologies

“…b) Synthetic hackmanite‐based photochromic UV sensors. Reproduced with permission 43. Copyright 2018, The Royal Society of Chemistry.…”

“…Published by Springer Nature; top-right: Reproduced with permission. [43] Copyright 2018, The Royal Society of Chemistry; bottom-left: Reproduced with permission. [35] Copyright 2016, Wiley-VCH; bottom-right: Reproduced with permission.…”

“…[129] Subsequently, when a synthetic hackmanite mineral was prepared with control over dopant states, this allowed the electronic states of the hackmanite to be tuned, resulting in a good degree of selectivity for different UV wavelengths (Figure 10b). [43] In this study, the authors also prepared a material whose absorption profile had a decent level of overlap with the erythemal action spectrum of the human skin. This allowed the development of a sensitive UV index sensor that detects the UV intensity in real time.…”

Ionothermal synthesis of a photochromic inorganic–organic complex for colorimetric and portable UV index indication and UVB detection

“…10,11 To the best of our knowledge, most of the reported UV photodetectors respond to either UVA, UVC, or even wide-band UV light, and there are only a few reports on the selective UVB detection behavior. 6,8,[10][11][12] Recently, photochromic viologen-based metal organic frameworks (PV-MOFs) appear to offer a convenient route to monitor UV radiation. [13][14][15] Differently from the traditional semiconductor UV photodetectors based on the photocurrent or photovoltaic phenomenon, PV-MOFs possess excellent reversibility, fast photoresponse rates and noticeable color contrast, which makes them able to detect UV light conveniently by visual color change.…”