Investigation on the origin of green luminescence from laser-ablated ZnO thin film

Activation of visible up-conversion luminescence in transparent and conducting ZnO:Er:Yb films by laser annealing

“…In the case of green emission, it is mostly associated with oxygen vacancies [18]. However, some authors assign it to zinc interstitial positions [19]. When the emission is yellow, orange and red, like in our case, it is mainly related to an excess of oxygen [18,20], oxygen interstitials [21][22][23] or zinc vacancies [20].…”

Electrochromic switching of electrodeposited ZnO+Zn5(OH)8Cl2 films

“…This effect is common in certain oxides, such as WO 3 , MoO 3 , V 2 O 5 , Nb 2 O 5 , Ir(OH) and NiO x H y as well as in some electrically conducive polymers such as polyaniline [12]. In industrial processes the most widely used oxide is WO 3 , the electrochromism effect of which is governed by its reversible reaction: Nevertheless, the ZnO semiconductor with a band gap of 3.4 eV is of increasing interest in applications such as photovoltaic cells, sensors and phototonic devices [13][14][15][16][17][18][19][20]. Films of ZnO can be produced by electrodeposition at temperatures over the 60ºC to 80ºC [21][22][23][24][25][26][27], being a cheap and easy technique.…”

Nanofabrication of Metal Oxide Patterns Using Self-Assembled Monolayers

“…9) and strong visible-luminescence from ZnO crystals excited by 330-385 nm light was observed by a photoluminescence microscope. ZnO crystals showed strong UV luminescence (around 390 nm) attributed to band-edge luminescence and visible-light luminescence caused from oxygen vacancy (450-600 nm) 61,62 . All of the crystals showed photoluminescencedue to high purity and high crystallinity with optimal oxygen vacancy, and this caused the bright visible-photoluminescence image.…”