Optical thermometry based on Bi3+,Ln3+ co-doped YNbO4 (Ln = Dy, Eu) phosphors

Luminescence–structure relationships in solids doped with Bi3+

“…lighting, 230-234 persistent luminescence, [235][236][237][238] anti-counterfeiting [239][240][241][242] or optical thermometry. [243][244][245][246][247][248][249]…”

“…lighting, 230–234 persistent luminescence, 235–238 anti-counterfeiting 239–242 or optical thermometry. 243–249…”

Novel color tunable LaCaGaO4:Bi3+,Eu3+ phosphors for high color rendering warm white LEDs

“…Currently, there are several methods for the commercial production of w‐LEDs. One method is to cover a blue GaN chip with yellow emitting phosphor YAG:Ce 3+ to produce white light 8–11 . These w‐LEDs obtained in this way have the advantages of simplicity and low cost, but their disadvantages are also obvious.…”

“…One method is to cover a blue GaN chip with yellow emitting phosphor YAG:Ce 3+ to produce white light. [8][9][10][11] These w-LEDs obtained in this way have the advantages of simplicity and low cost, but their disadvantages are also obvious. High correlated color temperatures (CCT) (>6000 K) and low R a (<70) caused by the absence of a red component in its emission do not meet the standards for health lighting, restricting the use of this technology in interior lighting, medical, and other industries.…”

UVB upconversion of LiYO2:Ho3+,Gd3+ for application in luminescence thermometry

“…1–6 Owing to the rich electronic energy levels and long-lived excited states of rare-earth (RE) ions as well as their unique photon absorption spanning (vacuum) ultraviolet (UV)/visible/infrared (IR) range, RE-based upconversion materials have been specifically designed and extensively reported for the colorful upconversion phenomena in (nano)particles, films, glasses, ceramics, hybrid matters, etc . 7–11 Amongst the reports, conversion of two or more near-IR (NIR) photons to one visible/far-red photon is becoming the most popular research field due to its innate advantages of efficient absorption centers (Yb 3+ , Nd 3+ , Er 3+ , etc .) and acceptors (Er 3+ , Ho 3+ , Tm 3+ , etc .…”