In the process of developing high-performance LCDs,narrow-band emitting phosphors with excellent performance are indispensable.In this study,a narrow-band blue phosphor BaZnAl_(10)O_(17):Eu^(2+)with an emission peak a...In the process of developing high-performance LCDs,narrow-band emitting phosphors with excellent performance are indispensable.In this study,a narrow-band blue phosphor BaZnAl_(10)O_(17):Eu^(2+)with an emission peak at 433 nm(which can be excited by near-ultraviolet light)and a full width at half maximum of 46 nm was found.The synthesized BaZnAl_(10)O_(17):Eu^(2+)phosphor exhibits low thermal quenching behavior.There is only 16.4%loss in emission intensity at 423 K compared to the initial intensity at room temperature.Using the narrow-band emission phosphor BaZnAl_(10)O_(17):Eu^(2+)as the blue light source,the prepared white LED device excited using a near-ultraviolet chip emits high-brightness white light(CCT=4436 K,R_(a)=93.96),whose CIE coordinates are(0.3387,0.3785)and CG can reach 99%of the NTSC standard.The narrow-band blue-emitting BaZnAl_(10)O_(17):Eu^(2+)phosphor has potential application value in white light-emitting diodes.展开更多
基金supported by the Government Funded Projects(627010104)the International Science Technology Cooperation Project of Jilin Province Science,the Technology Department(20200801038GH)the Key Laboratory for Comprehensive Energy Saving of Cold Regions Architecture of Ministry of Education,Jilin Jianzhu University(JLZHKF022021001).
文摘In the process of developing high-performance LCDs,narrow-band emitting phosphors with excellent performance are indispensable.In this study,a narrow-band blue phosphor BaZnAl_(10)O_(17):Eu^(2+)with an emission peak at 433 nm(which can be excited by near-ultraviolet light)and a full width at half maximum of 46 nm was found.The synthesized BaZnAl_(10)O_(17):Eu^(2+)phosphor exhibits low thermal quenching behavior.There is only 16.4%loss in emission intensity at 423 K compared to the initial intensity at room temperature.Using the narrow-band emission phosphor BaZnAl_(10)O_(17):Eu^(2+)as the blue light source,the prepared white LED device excited using a near-ultraviolet chip emits high-brightness white light(CCT=4436 K,R_(a)=93.96),whose CIE coordinates are(0.3387,0.3785)and CG can reach 99%of the NTSC standard.The narrow-band blue-emitting BaZnAl_(10)O_(17):Eu^(2+)phosphor has potential application value in white light-emitting diodes.
