Efficient Spectral Regulation in Ce:Lu3(Al,Cr)5O12 and Ce:Lu3(Al,Cr)5O12/Ce:Y3Al5O12 Transparent Ceramics With High Color Rendering Index for High-Power White LEDs/LDs
Realizing a high color rendering index (CRI) in Ce:LuAG transparent ceramics (TCs) with desired thermal stability is essential to their applications in white LEDs/LDs as color converters. In this study, based on the scheme of configuring the red component by Cr3+ doping, an efficient spectral regulation was realized in Ce,Cr:LuAG TCs. A unilateral shift could be observed in both PL and PLE spectra. By constructing TC-based white LED/LD devices in a remote excitation mode, luminescence properties of Ce,Cr:LuAG TCs were systematically investigated. The CRI values of Ce:LuAG TC based white LEDs could be increased by a magnitude of 46.2%. Particularly, by combining Ce,Cr:LuAG TCs with a 0.5 at.% Ce:YAG TC, a surprising CRI values of 88 and 85.5 were obtained in TC based white LEDs and LDs, respectively. Therefore, Ce,Cr:LuAG TC is a highly promising color convertor for high-power white LEDs/LDs applied in general lighting and displaying.
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Posted 11 Jan, 2021
Received 19 Jan, 2021
Received 19 Jan, 2021
Received 15 Jan, 2021
On 13 Jan, 2021
On 12 Jan, 2021
On 12 Jan, 2021
On 11 Jan, 2021
Invitations sent on 11 Jan, 2021
On 11 Jan, 2021
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On 03 Jan, 2021
On 03 Jan, 2021
Efficient Spectral Regulation in Ce:Lu3(Al,Cr)5O12 and Ce:Lu3(Al,Cr)5O12/Ce:Y3Al5O12 Transparent Ceramics With High Color Rendering Index for High-Power White LEDs/LDs
Posted 11 Jan, 2021
Received 19 Jan, 2021
Received 19 Jan, 2021
Received 15 Jan, 2021
On 13 Jan, 2021
On 12 Jan, 2021
On 12 Jan, 2021
On 11 Jan, 2021
Invitations sent on 11 Jan, 2021
On 11 Jan, 2021
On 03 Jan, 2021
On 03 Jan, 2021
On 03 Jan, 2021
On 03 Jan, 2021
Realizing a high color rendering index (CRI) in Ce:LuAG transparent ceramics (TCs) with desired thermal stability is essential to their applications in white LEDs/LDs as color converters. In this study, based on the scheme of configuring the red component by Cr3+ doping, an efficient spectral regulation was realized in Ce,Cr:LuAG TCs. A unilateral shift could be observed in both PL and PLE spectra. By constructing TC-based white LED/LD devices in a remote excitation mode, luminescence properties of Ce,Cr:LuAG TCs were systematically investigated. The CRI values of Ce:LuAG TC based white LEDs could be increased by a magnitude of 46.2%. Particularly, by combining Ce,Cr:LuAG TCs with a 0.5 at.% Ce:YAG TC, a surprising CRI values of 88 and 85.5 were obtained in TC based white LEDs and LDs, respectively. Therefore, Ce,Cr:LuAG TC is a highly promising color convertor for high-power white LEDs/LDs applied in general lighting and displaying.
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
Figure 8
Figure 9