Black-body emission from nanostructured materials

All‐In‐One Optical Heater‐Thermometer Nanoplatform Operative From 300 to 2000 K Based on Er3+ Emission and Blackbody Radiation

“…[ 10 ] A similar broadband visible emission has been reported for lanthanide oxides, [28][29][30] [ 33 ] carbon nanotubes, [ 34 ] and Si and SiC nonoparticles, [ 35 ] upon CW laser excitations but its origin is still contentious: it has been ascribed to incandescent/blackbody emission, [ 29 , 30 , 34 , 35 ] photon up-conversion emission induced by a thermal avalanche process, [ 28 ] defect emissions [ 33 ] and anti-Stokes emissions. [ 32 ] In ref.…”

“…The local temperature is calculated using: (i) Boltzmann's distribution (300-1050 K with resolution of 0.3-2.0 K and under several pump power cycles) for the Er 3 + up-conversion NRs and, thus, the operating range of the nanothermometers is easily adjusted by controlling the amount of AuNPs. Analogous white-light emission upon CW laser excitation has been reported for disparate materials, such as lanthanide oxides, [28][29][30][31] LiYbP 4 O 12 , [ 32 ] YVO 4 :Yb 3 + /Er 3 + nanoparticles, [ 33 ] carbon nanotubes, [ 34 ] and Si and SiC nanoparticles, [ 35 ] but its origin is still contentious. A remarkable result of the present study is the unambiguous attribution of this white-light emission to an incandescence process, hence settling the controversy.…”

“…[ 28 ] and ref. [ 35 ] the emissions were observed only in vacuum. On the other hand, the strong infrared emission part from the rough gold fi lm in ref.…”

Unconventional Production of Bright White Light Emission by Nd-Doped and Nominally Un-Doped <inline-formula> <tex-math notation="TeX">$\hbox{Y}_{2}\hbox{O}_{3}$</tex-math></inline-formula> Nano-Powders

“…Sato et al [13], Nolas et al [14], and Zhou et al [15] showed that the RE dopants reduce the thermal conductivity of the YAG, Skutterudites and Lanthanum Zirconate ceramics. Also Roura et al [16], [17] observed broadband emission from SiC nano-particles and mechanically milled Si.…”

Eu3+ red long afterglow in Y2O2S:Ti, Eu phosphor through afterglow energy transfer

“…The fact that no peak could be detected in pure Y 2 O 2 S means no traps in pure Y 2 O 2 S matrix. With the increase of heated temperature, the slightly increase of TL intensity may be due to black body radiation [25]. A weak TL peaks at around 110 1C in the single Eu 3+ doped Y 2 O 2 S may be due to the localized electrons states of Eu 3+ in Y 2 O 2 S matrix, which has excited states close to the conduction band (about 0.23 eV) to allow its electron to be photoionized into the conduction band [26].…”