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| 1 | Ca_(1−x)Li_(x)Al_(1−x)Si_(1+x)N_(3):Eu^(2+) solid solutions as broadband,color-tunable and thermally robust red phosphors for superior color rendition white light-emitting diodes显示文摘Color rendition,luminous efficacy and reliability are three key technical parameters for white light-emitting diodes(wLEDs)that are dominantly determined by down-conversion phosphors.However,there is usually an inevitable trade-off between color rendition and luminescence efficacy because the spectrum of red phosphor(that is,spectral broadness and position)cannot satisfy them simultaneously.In this work,we report a very promising red phosphor that can minimize the aforementioned trade-off via structure and band-gap engineering,achieved by introducing isostructural LiSi_(2)N_(3) into CaAlSiN_(3):Eu^(2+).The solid solution phosphors show both substantial spectra broadening(88→117 nm)and blueshift(652→642 nm),along with a significant improvement in thermal quenching(only a 6%reduction at 150℃),which are strongly associated with electronic and crystal structure evolutions.The broadband and robust red phosphor thus enables fabrication of super-high color rendering wLEDs(Ra=95 and R9=96)concurrently with the maintenance of a high-luminous efficacy(101 lm W^(−1)),validating its superiority in highperformance solid state lightings over currently used red phosphors. | Le Wang Rong-Jun Xie Yuanqiang Li Xiaojun Wang Chong-Geng Ma Dong Luo Takashi Takeda Yi-Ting Tsai Ru-Shi Liu Naoto Hirosaki | 2016 | Light(Science & Applications)2016，5，1： | 9 |
| 2 | Single-particle-diagnosis approach: An efficient strategy for discovering new nitride phosphors显示文摘Discovery of novel phosphors is extremely important to target the ever change of the solid state lighting technology. In this paper, we present a high-speed way to discover new phosphors, namely singleparticle-diagnosis approach. This approach is based on investigating the crystal structure and luminescence of a tiny single crystal, without the necessity of the growth of large-size single crystals or the preparation of single phase powder samples. The concept of the approach and some new nitride phosphors explored by this approach are shown in this paper. | Xiaojun Wang Takashi Takeda Naoto Hirosaki Shiro Funahashi Rong-Jun Xie | 2018 | Journal of Rare Earths2018，36，1： | 4 |
| 3 | Impairment of IFN-a production capacity in patients with hepatitis C virus and the risk of the development of hepatocellular carcinoma显示文摘AIM: To determine the utility of interferon (IFN) -αproduction capacity in patients with hepatitis C virus (HCV) infection for the measurement of immunosurveillance potential and for the early detection of hepatocellular carcinoma (HCC) by investigating the Sendai virus (HVJ) stimulated IFN-α production capacity of patients with HCV infection.METHODS: HVJ stimulated IFN-α production was determined in a large number of patients with HCV infection and the development of HCC was monitored for 3 years in patients with liver cirrhosis (LC).RESULTS: IFN-α production capacity decreases gradually with the progression of liver disease from chronic hepatitis (CH) to HCC. A significant correlation between the duration of HCV infection and impaired IFN-α production capacity was observed. IFN-α production in patients who developed HCC within 3 years was significantly lower than that of patients who remained in LC without developing HCC.CONCLUSION: Measurement of IFN-α production in LC patients may be useful for the early detection of HCC. | Kazuko Uno Yoshiki Suginoshita Kazuhiro Kakimi Fuminori Moriyasu Mayumi Hirosaki Taro Shirakawa Tsunataro Kishida | 2005 | World Journal of Gastroenterology2005，11，46： | 3 |
| 4 | A simple,efficient synthetic route to Sr2Si5NB8:Eu2+-based red phosphors for white light-emitting diodes显示文摘 | Xie Rong Jun Naoto Hirosaki Takayuki Suehiro | 2006 | Chem Mater2006，18，： | 1 |
| 5 | Strong green emission from a-SiAlON activated by divalent ytterbium under blue light irradiation 显示文摘 | Xie R J Hirosaki N Mitomo M Uheda K Suehiro T Xu X Yamamoto Y Sekiguchi T | 2005 | Journal of Physical Chemistry B2005，109，： | 1 |
| 6 | Characterization and properties of green-emitting β-SiAlON:Eu2+ powder phosphors for white light-emitting diodes显示文摘 | HIROSAKI N XIE R J KIMOTO K | 2005 | Applied Physics Letters2005，86，21： | 1 |
| 7 | Luminescence properties of a red phosphor,CaAlSiN3:Eu2+,for white light-emitting diodes显示文摘 | Uheda K Hirosaki N Yamamoto Y Naito A Nakajima T Yamamoto H | | 0，，： | 1 |
| 8 | Strong green emission from alpha-SiAlON activated by divalent ytterbimn under blue light irradiation显示文摘 | Xie R J Hirosaki N Mitomo M | 2005 | J Phys Chem:B2005，109，19： | 1 |
| 9 | Emulsion drying synthesis of olivine LiFePOJC composite and its electrochemical proper ties as lithium intercalation material显示文摘 | Myung S T Komaba S Hirosaki N H | 2004 | Electrochim Acts2004，49，24： | 1 |
| 10 | Crystal electronic structures and photoluminescence properties of rare-earth doped LiSi2 N3显示文摘 | Li Y Q Hirosaki N Xie R J Takeka T Mitomo M | | 0，，： | 1 |
| 11 | Emulsion dr- ying synthesis o f olivine LiFeP04/C composite and its electrochemical proper ties as lithium intercalation materi- al显示文摘 | Myung S T Komaba S Hirosaki N H | 2004 | Electro chim Acta2004，49，24： | 1 |
| 12 | Powder synthesis of Ca-'-SiAION as a host material for phosphors显示文摘 | SUEHIRO T HIROSAKI N XIE J R | 2005 | Chem Mater2005，17，： | 1 |
| 13 | Effect of grain growth of β-Si3N4 on strength,weibull modulus,and fracture toughness显示文摘 | HIROSAKI N AKIMUNE Y | 1993 | J Am Ceram Soc1993，76，7： | 1 |
| 14 | Wide Color Gamut Backlight for Liquid Crystal Displays Using Three-band Phosphor- converted White Light-emitting Diodes 显示文摘 | Xie R J Hirosaki N Takeda T | 2009 | Appl Phys Express2009，2，2： | 1 |
| 15 | Emulsion drying preparation of layered LiMnxCr1-xO2 solid solution and its application to Li-ion battery cathode material显示文摘 | Myung S T Komaba S Hirosaki N | 2003 | Journal of Power Sources2003，，： | 1 |
| 16 | Emulsion drying synthesis of olivine LiFePO4/C composite and its electrochemical properties as lithium intercalation material显示文摘 | MyungST KomabaS Hirosaki N etal | 2004 | Electrochimica Acta2004，49，： | 1 |
| 17 | Sintering of Si3N4 with the addition of rare-earth oxides 显示文摘 | Hirosaki N Okada A Matoba k | 1988 | J Am Soc1988，71，3： | 1 |
| 18 | Emulsion drying synthesis of olivine LiFePO4/C composite and its electrochemical properties as lithium intercalation material显示文摘 | MYUNG S T KOMABA S HIROSAKI N YASHIRO H KUMAGAI N | 2004 | Electrochimica Acta2004，49，24： | 1 |
| 19 | Red-shift of Emission Wavelength Caused by Reabsorption Mechanism of Europium Activated Ca-tx-SiAION Ceramic Phosphors 显示文摘 | SAKUMA K HIROSAKI N XIE R J | 2007 | Journal of Luminescence2007，126，2： | 1 |
| 20 | Wavelength-tunable and thermally stable Li-α-sialon:Eu2+ oxynitride phosphors for white light-emitting diodes显示文摘 | Xie R J Hirosaki N Mitomo M | 2006 | Appl Phys Lett2006，89，24： | 1 |
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