iindaba

Ngokomthetho kaStokes, izinto eziphathekayo zinokuvuyiswa kuphela kukukhanya kwamandla aphezulu kwaye zikhuphe ukukhanya okuphantsi kwamandla.Ngamanye amazwi, imathiriyeli inokukhupha ubude obubude bezavevele kunye nokukhanya okuphantsi kwamaza ombane xa ichulumanciswa bubude obufutshane bobude kunye nokukhanya okuhamba rhoqo.
Ngokuchasene noko, i-upconversion luminescence ibhekiselele kwizinto ezivuyiswa kukukhanya okunamandla aphantsi kwaye zikhupha ukukhanya ngamandla aphezulu.Ngamanye amazwi, i-material ikhupha ukukhanya kunye ne-wavelength emfutshane kunye ne-frequency ephezulu xa ivuyiswa kukukhanya kunye nobude obude kunye ne-frequency ephantsi.
Ukuza kuthi ga ngoku, i-upconversion luminescence yenzekile kwiikhompawundi ezine-ion zomhlaba ezinqabileyo, ngakumbi i-fluoride, i-oxide, iikhompawundi zesulfure, i-fluorine oxides, i-halides, njl.
I-NaYF4 yimathiriyeli ye-substrate eneyona nto iphezulu yokuguqula i-luminescence esebenzayo.Umzekelo, xa iNaYF4: Er, Yb, okt, ytterbium kunye neerbiumkabini,I-Er isebenza njenge-activator kunye ne-Yb njenge-sensitiser.