Dynamics of the Green and Red Upconversion Emissions in <svg style="vertical-align:-0.21599pt;width:43.087502px;" id="M1" height="21.112499" version="1.1" viewBox="0 0 43.087502 21.112499" width="43.087502" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns="http://www.w3.org/2000/svg"><g transform="matrix(.022,-0,0,-.022,.062,20.788)"><path id="x59" d="M620 650v-28q-51 -6 -70.5 -19t-48.5 -60q-68 -110 -126 -219q-17 -32 -17 -63v-136q0 -63 15.5 -77.5t84.5 -19.5v-28h-282v28q67 5 82 19.5t15 77.5v133q0 22 -21 60l-126 219q-31 53 -49 67t-62 18v28h239v-28q-51 -6 -59.5 -18t8.5 -36q13 -25 135 -237
q87 155 119 225q18 37 9 48.5t-67 17.5v28h221z" /></g><g transform="matrix(.022,-0,0,-.022,14.274,20.788)"><path id="x62" d="M152 404l81 35q23 10 41 10q81 0 139 -61.5t58 -149.5q0 -107 -74.5 -178.5t-176.5 -71.5q-71 0 -147 36v555q0 48 -9.5 59.5t-56.5 15.5v23q79 10 145 35v-308zM152 374v-258q0 -20 6 -35q7 -19 30 -37t58 -18q63 0 99.5 50t36.5 137q0 82 -43.5 131t-108.5 49
q-44 0 -78 -19z" /></g><g transform="matrix(.016,-0,0,-.016,25.662,10.025)"><path id="x33" d="M285 378v-2q65 -13 102 -54.5t37 -97.5q0 -57 -30.5 -104.5t-74 -75t-85.5 -42t-72 -14.5q-31 0 -59.5 11t-40.5 23q-19 18 -16 36q1 16 23 33q13 10 24 0q58 -51 124 -51q55 0 88 40t33 112q0 64 -39 96.5t-88 32.5q-29 0 -64 -11l-6 29q77 25 118 57.5t41 84.5
q0 45 -26.5 69.5t-68.5 24.5q-67 0 -120 -79l-20 20l43 63q51 56 127 56h1q66 0 107 -37t41 -95q0 -42 -31 -71q-22 -23 -68 -54z" /></g><g transform="matrix(.016,-0,0,-.016,33.194,10.025)"><path id="x2B" d="M535 230h-212v-233h-58v233h-213v50h213v210h58v-210h212v-50z" /></g></svg>-<svg style="vertical-align:-0.0pt;width:38.537498px;" id="M2" height="20.85" version="1.1" viewBox="0 0 38.537498 20.85" width="38.537498" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns="http://www.w3.org/2000/svg"><g transform="matrix(.022,-0,0,-.022,.062,20.788)"><path id="x45" d="M517 162l29 -4q-18 -100 -35 -158h-482v28q68 5 83.5 20t15.5 77v398q0 66 -13 80t-73 19v28h446q0 -8 8 -144l-29 -4q-11 51 -32 85q-11 17 -35 23t-78 6h-76q-23 0 -28 -5t-5 -27v-228h94q67 0 83 12t25 63h29v-191h-29q-10 54 -26 65.5t-81 11.5h-95v-189
q0 -65 24 -81q19 -13 104 -13q57 0 83 7t43 27q28 33 50 94z" /></g><g transform="matrix(.022,-0,0,-.022,12.795,20.788)"><path id="x72" d="M181 342h2q63 107 121 107q24 0 41 -16t17 -34q0 -34 -32 -49q-17 -7 -26 2q-21 20 -43 20q-20 0 -42 -22t-38 -63v-183q0 -50 12.5 -62t69.5 -16v-26h-230v26q47 5 58 17t11 61v207q0 49 -9 60.5t-53 16.5v23q74 12 141 40v-109z" /></g><g transform="matrix(.016,-0,0,-.016,21.112,10.025)"><use xlink:href="#x33" /></g><g transform="matrix(.016,-0,0,-.016,28.644,10.025)"><use xlink:href="#x2B" /></g></svg>-Codoped <svg style="vertical-align:-4.47125pt;width:47.387501px;" id="M3" height="20.6" version="1.1" viewBox="0 0 47.387501 20.6" width="47.387501" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns="http://www.w3.org/2000/svg"><g transform="matrix(.022,-0,0,-.022,.062,14.975)"><use xlink:href="#x59" /></g><g transform="matrix(.016,-0,0,-.016,14.275,20.35)"><path id="x32" d="M412 140l28 -9q0 -2 -35 -131h-373v23q112 112 161 170q59 70 92 127t33 115q0 63 -31 98t-86 35q-75 0 -137 -93l-22 20l57 81q55 59 135 59q69 0 118.5 -46.5t49.5 -122.5q0 -62 -29.5 -114t-102.5 -130l-141 -149h186q42 0 58.5 10.5t38.5 56.5z" /></g><g transform="matrix(.022,-0,0,-.022,22.425,14.975)"><path id="x4F" d="M381 665q131 0 226.5 -93t95.5 -239q0 -158 -96 -253t-238 -95q-137 0 -231 95t-94 238q0 142 92.5 244.5t244.5 102.5zM359 629q-89 0 -151 -74.5t-62 -208.5q0 -141 69 -233t175 -92q90 0 150.5 74t60.5 211q0 152 -69 237.5t-173 85.5z" /></g><g transform="matrix(.016,-0,0,-.016,39.175,20.35)"><use xlink:href="#x33" /></g></svg> Nanorods

<table>Room temperature visible upconversion spectra of Y<sub>2</sub>O<sub>3</sub>:Er<sup>3+</sup>, Yb<sup>3+</sup> nanorods under excitation at 980 nm.</table>

Journal of Nanomaterials

fig5

Figure 5

Figure 5: Dynamics of the Green and Red Upconversion Emissions in <svg style="vertical-align:-0.21599pt;width:43.087502px;" id="M1" height="21.112499" version="1.1" viewBox="0 0 43.087502 21.112499" width="43.087502" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns="http://www.w3.org/2000/svg"><g transform="matrix(.022,-0,0,-.022,.062,20.788)"><path id="x59" d="M620 650v-28q-51 -6 -70.5 -19t-48.5 -60q-68 -110 -126 -219q-17 -32 -17 -63v-136q0 -63 15.5 -77.5t84.5 -19.5v-28h-282v28q67 5 82 19.5t15 77.5v133q0 22 -21 60l-126 219q-31 53 -49 67t-62 18v28h239v-28q-51 -6 -59.5 -18t8.5 -36q13 -25 135 -237
q87 155 119 225q18 37 9 48.5t-67 17.5v28h221z" /></g><g transform="matrix(.022,-0,0,-.022,14.274,20.788)"><path id="x62" d="M152 404l81 35q23 10 41 10q81 0 139 -61.5t58 -149.5q0 -107 -74.5 -178.5t-176.5 -71.5q-71 0 -147 36v555q0 48 -9.5 59.5t-56.5 15.5v23q79 10 145 35v-308zM152 374v-258q0 -20 6 -35q7 -19 30 -37t58 -18q63 0 99.5 50t36.5 137q0 82 -43.5 131t-108.5 49
q-44 0 -78 -19z" /></g><g transform="matrix(.016,-0,0,-.016,25.662,10.025)"><path id="x33" d="M285 378v-2q65 -13 102 -54.5t37 -97.5q0 -57 -30.5 -104.5t-74 -75t-85.5 -42t-72 -14.5q-31 0 -59.5 11t-40.5 23q-19 18 -16 36q1 16 23 33q13 10 24 0q58 -51 124 -51q55 0 88 40t33 112q0 64 -39 96.5t-88 32.5q-29 0 -64 -11l-6 29q77 25 118 57.5t41 84.5
q0 45 -26.5 69.5t-68.5 24.5q-67 0 -120 -79l-20 20l43 63q51 56 127 56h1q66 0 107 -37t41 -95q0 -42 -31 -71q-22 -23 -68 -54z" /></g><g transform="matrix(.016,-0,0,-.016,33.194,10.025)"><path id="x2B" d="M535 230h-212v-233h-58v233h-213v50h213v210h58v-210h212v-50z" /></g></svg>-<svg style="vertical-align:-0.0pt;width:38.537498px;" id="M2" height="20.85" version="1.1" viewBox="0 0 38.537498 20.85" width="38.537498" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns="http://www.w3.org/2000/svg"><g transform="matrix(.022,-0,0,-.022,.062,20.788)"><path id="x45" d="M517 162l29 -4q-18 -100 -35 -158h-482v28q68 5 83.5 20t15.5 77v398q0 66 -13 80t-73 19v28h446q0 -8 8 -144l-29 -4q-11 51 -32 85q-11 17 -35 23t-78 6h-76q-23 0 -28 -5t-5 -27v-228h94q67 0 83 12t25 63h29v-191h-29q-10 54 -26 65.5t-81 11.5h-95v-189
q0 -65 24 -81q19 -13 104 -13q57 0 83 7t43 27q28 33 50 94z" /></g><g transform="matrix(.022,-0,0,-.022,12.795,20.788)"><path id="x72" d="M181 342h2q63 107 121 107q24 0 41 -16t17 -34q0 -34 -32 -49q-17 -7 -26 2q-21 20 -43 20q-20 0 -42 -22t-38 -63v-183q0 -50 12.5 -62t69.5 -16v-26h-230v26q47 5 58 17t11 61v207q0 49 -9 60.5t-53 16.5v23q74 12 141 40v-109z" /></g><g transform="matrix(.016,-0,0,-.016,21.112,10.025)"><use xlink:href="#x33" /></g><g transform="matrix(.016,-0,0,-.016,28.644,10.025)"><use xlink:href="#x2B" /></g></svg>-Codoped <svg style="vertical-align:-4.47125pt;width:47.387501px;" id="M3" height="20.6" version="1.1" viewBox="0 0 47.387501 20.6" width="47.387501" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns="http://www.w3.org/2000/svg"><g transform="matrix(.022,-0,0,-.022,.062,14.975)"><use xlink:href="#x59" /></g><g transform="matrix(.016,-0,0,-.016,14.275,20.35)"><path id="x32" d="M412 140l28 -9q0 -2 -35 -131h-373v23q112 112 161 170q59 70 92 127t33 115q0 63 -31 98t-86 35q-75 0 -137 -93l-22 20l57 81q55 59 135 59q69 0 118.5 -46.5t49.5 -122.5q0 -62 -29.5 -114t-102.5 -130l-141 -149h186q42 0 58.5 10.5t38.5 56.5z" /></g><g transform="matrix(.022,-0,0,-.022,22.425,14.975)"><path id="x4F" d="M381 665q131 0 226.5 -93t95.5 -239q0 -158 -96 -253t-238 -95q-137 0 -231 95t-94 238q0 142 92.5 244.5t244.5 102.5zM359 629q-89 0 -151 -74.5t-62 -208.5q0 -141 69 -233t175 -92q90 0 150.5 74t60.5 211q0 152 -69 237.5t-173 85.5z" /></g><g transform="matrix(.016,-0,0,-.016,39.175,20.35)"><use xlink:href="#x33" /></g></svg> Nanorods 

Journal of Nanomaterials

Dynamics of the Green and Red Upconversion Emissions in --Codoped Nanorods

Figure 5