Synthesis and photoluminescence of BCNO/SiO2 nanocomposite phosphor materials

A red emitting of manganese-doped boron carbon oxynitride (BCNO) phosphor materials: facile approach and photoluminescence properties

“…The diffraction peaks of BCNO:Mn D indicate the existence of B 2 O 3 and BN phases, which is similar to previous reports. 14,15,20 The B 2 O 3 is shown by a characteristic peak centered at 14.7 , whereas 27.8 belongs to the (111) and (310) of cubic B 2 O 3 (JCPDS card no. 06-0297), respectively.…”

“…06-0297), respectively. 14,15,20 The BN phase, which corresponds to turbostratic BN (t-BN) (JCPDS card no. 73-2095), is shown by the characteristic peak centered at 27 and 43 , belonging to (002) and (10) (unresolved (100) and (101) planes for h-BN), respectively.…”

“…The red emission peak was shied toward shorter wavelengths with increasing temperature, which may have been related to changing C/B or C/N content. 2,14,20 However, further investigation is still needed. The red emission peak for BCNO:Mn synthesized at 500-600 C showed a predominant red emission, while starting from 650 C, the blue emission became predominant, indicating not only the Mn concentration but also the synthesis temperature plays an important role in the red luminescence of the BCNO phosphor.…”

“…2b, the intensity of each peak in the XRD results tended to increase along with the increase in temperature, which indicates that the BCNO structure was improved. 20 Details of the XRD patterns of the BCNO:Mn D at 14.7 and 27.8 belonging to (111) and (310) of cubic B 2 O 3 are shown in Fig. 5c and d.…”

Archives of Metallurgy and Materials

“…There are many reports attributed to the employment of SiO 2 as a coating layer on the surface of phosphors [22][23][24][25]. Also in several research works, nanosized SiO 2 has been used to make composite phosphors via different techniques such as sol-gel and spray pyrolysis [19,[26][27][28]. Although it is known that SiO 2 nanoparticles are ideal candidates to improve the optical properties of phosphor materials, but since these nanoparticles are very expensive, their applications are limited to some extent.…”