Inorganic Photochromic Materials

Faughnan, Brian W.; Staebler, D. L.; Kiss, Z.

doi:10.1016/b978-0-12-002902-0.50009-0

Cited by 13 publications

(10 citation statements)

References 62 publications

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“…Single TiO 2 crystal does not show any appreciable photochromism at room temperature. However, at temperature lower than 77 K it shows photochromic properties similar to the alkali earth titanates [174]. Bandgap excitation of TiO 2 sol [103,[175][176][177][178][179][180][181][182][183], gel [182][183][184][185][186], powder [187,188] and film [188,189] in an oxygen-free atmosphere results in a photochromic response (blue in color).…”

Section: Photochromic Behavior and Mechanismmentioning

confidence: 99%

Photochromism in transition-metal oxides

He¹,

Yao²

2004

Res. Chem. Intermed.

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Transition-metal oxides -including tungsten oxide, molybdenum oxide, titanium dioxide, vanadium pentoxide, niobium pentoxide and zinc oxide -exhibit photochromism upon bandgap excitation. These oxides constitute an important group of inorganic chromogenic materials, which is of great significance in the perspective of science and technology. During the past several decades, great progresses have been made in the microstructure, photochromic behavior and mechanism of these oxides, specifically of tungsten oxide. These studies underscore the opportunity of using these materials in photonic applications. The details will be presented in this review.

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Section: Photochromic Behavior and Mechanismmentioning

confidence: 99%

Photochromism in transition-metal oxides

He¹,

Yao²

2004

Res. Chem. Intermed.

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“…Many metal oxides including aluminum, titanium, vanadium, niobium, molybdenum, and tungsten oxides are photochromic when they contain impurities, or dopants. This coloration has been interpreted on the basis of electron trapping at appropriate lattice sites within the crystals, as shown in Figure , where the O→M LMCT transition corresponds to the transition between the valence and conduction bands for the infinite metal−oxide lattice. − Table shows coloring behavior of the metal oxides with dopants.…”

Section: Photochromism and Electrochromism Of Metal Oxidesmentioning

confidence: 99%

Photo- and Electrochromism of Polyoxometalates and Related Materials

1998

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ContentsI. Introduction 307 A. Historical Background 307 B. Scope and Limitations 308 II. Photochromism and Electrochromism of Metal Oxides 309 A. Photoinduced Coloration of Metal Oxides Due to Impurity Effects 309 B. Electrochromism 310 1. WO 3 310 2. Other Metal Oxides 310 III. Photochromism of Polyoxometalate Solids 311 A. Alkylammonium Polyoxomolybdates 311 B. Other Polyoxometalates 314 IV. Electrochromism of Polyoxometalates 314 A. H 3 PW 12 O 40 314 B. K 0.33 WO 3.165 and Peroxopolytungstic Acids 314 V. Photoluminescence and Intramolecular Energy Transfer in Polyoxometalate Solids 315 A. Polyoxometalloeuropates 315 1. Structural Feature 315 2. Intramolecular Energy Transfer from the OfM LMCT States to Eu 3+ 316 B. OfM LMCT Triplet Emission 317 VI. Photoinduced Formation of Heteropoly Blues 318 A. Polyoxomolybdates 318 B. Polyoxotungstates 319 C. Polyoxovanadates and Self-Assembly Encapsulation 321 VII. Conclusions 322 VIII. Acknowledgments 323 IX. References 323

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“…In recent years, inorganic photochromic materials have received much attention of scientific community due to their promising applications in many areas such as smart window, display, imaging, solar energy conversion and camouflage [1]. Many kinds of transition metal oxides, such as MoO 3 , TiO 2 and WO 3 have been investigated and subtotal of those show color changes on exposure to both sunlight and UV radiation.…”

Section: Introductionmentioning

confidence: 99%