JP7062693B6 - 近赤外発光材料および当該材料で作製された発光装置 - Google Patents
近赤外発光材料および当該材料で作製された発光装置 Download PDFInfo
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Description
前記R元素は、Y元素、La元素、Lu元素、Gd元素またはTb元素から選択された少なくとも一種であり、
前記Q元素は、Ga元素および/またはAl元素であり、
前記パラメータu、v、w、xおよびyは、2.5≦u≦3.5、3.5≦v≦5.5、11.25≦w≦13.25、0.02≦x≦0.30、および、0.02≦y≦0.30を満たす。
本発明は、発光装置を作製するための前記近赤外発光材料の用途をさらに開示する。
前記M元素は、Ca元素および/またはSr元素から選択され、
前記パラメータm、a、b、c、d、e、f、gおよびnは、0.8≦m≦1.2、0.8≦a≦1.2、0.8≦b≦1.2、2≦c≦4、0.0001≦d≦0.1、1.8≦e≦2.2、4≦f≦6、7≦g≦9、および、0.0001≦n≦0.1を満たす。
本実施例に記載の近赤外発光材料に含まれる無機化合物の組成式は、Y2.92Ga4.4O11.25:Cr0.10,Yb0.08である。
本比較例に記載の近赤外蛍光粉に含まれる化合物組成式は、Y2.9Ga5O12:Yb0.10である。
本実施例に記載の近赤外発光材料に含まれる化合物組成式は、Y3.38Ga4.9O12.66:Cr0.10,Yb0.06である。
実施例3~17に記載の近赤外蛍光粉の作製方法は、実施例1および2と同様であり、相違点は、目的化合物の化学式に従って、適切な計量の化合物を選択して混合、粉砕、焼成し、所望の近赤外蛍光粉材料を取得する、ということのみにあり、実施例3~17において作製された発光材料の無機化合物の化学式は、表1に示される。
下記の実施例15~18は、本発明の近赤外蛍光粉材料で作製された発光装置、すなわち、従来技術における公知の発光装置構造を例にしたものであり、前記発光装置の構造模式図を図4に示す。前記発光装置は、台座5を含み、ヒートシンク4とピン3とが設けられており、前記発光装置の光源は、半導体チップ2であり、その光学材料部分は、光変換部Iと光変換部IIとを含み、その外層にはプラスチックレンズ7が設けられている。前記光変換部Iは、前記半導体チップ2が発した一次光を吸収して高波長の二次光に変換し、前記光変換部IIは、前記半導体チップ2の一次光と前記光変換部Iが発した二次光とを吸収して高波長の三次光に変換する。
Claims (13)
- 近赤外発光材料であって、
当該近赤外発光材料は、RuQvOw:Crx、Ybyの化学式の無機化合物を含み、
前記R元素は、Tb元素および/またはLu元素を含み、
前記Q元素は、Ga元素であるか、又は前記Q元素は、Ga元素とAl元素であり、
且つ、前記パラメータu、v、w、xおよびyは、2.5≦u≦3.5、4.2≦v≦5.5、11.25≦w≦13.25、0.02≦x≦0.30、0.02≦y≦0.30、および、0.6≦y/x≦1を満たすことを特徴とする近赤外発光材料。 - 前記Q元素は、Ga元素であることを特徴とする請求項1に記載の近赤外発光材料。
- 前記Q元素は、Ga元素とAl元素との組み合わせであり、前記Ga元素のAl元素に対するモル比はjであり、且つ80%≦j<100%であることを特徴とする請求項1に記載の近赤外発光材料。
- 前記R元素は、Tb元素またはLu元素であり、または、前記R元素は、Y元素とTb元素またはLu元素との組み合わせであることを特徴とする請求項1から3の何れか一項に記載の近赤外発光材料。
- 前記パラメータu、v、xおよびyは、1.2≦(v+x)/(u+y)≦1.65を満たすことを特徴とする請求項1から4の何れか一項に記載の近赤外発光材料。
- 前記発光材料は、Baまたは/およびF元素をさらに含むことを特徴とする請求項1から5の何れか一項に記載の近赤外発光材料。
- 蛍光体と励起光源とを含む発光装置であって、
前記蛍光体は、請求項1から6の何れか一項に記載の近赤外発光材料を含むことを特徴とする発光装置。 - 半導体チップ(2)と光変換部I(1)と光変換部II(6)とを含み、
前記光変換部I(1)は、前記半導体チップ(2)が発した一次光を吸収して高波長の二次光に変換し、前記光変換部II(6)は、前記半導体チップ(2)の一次光と前記光変換部I(1)が発した二次光とを吸収して高波長の三次光に変換し、
前記光変換部I(1)は、発光材料Iを少なくとも含み、前記光変換部II(6)は、請求項1から6の何れか一項に記載の近赤外発光材料を少なくとも含むことを特徴とする請求項7に記載の発光装置。 - 前記発光材料Iは、前記半導体チップ(2)の励起で580~650nmのピーク波長の放射光を放射可能な発光材料であることを特徴とする請求項8に記載の発光装置。
- 前記発光材料Iは、一般式MmAlaSibNc:EudまたはMeSifNg:Eunの発光材料から選択された一種または二種であり、
前記M元素は、Ca元素および/またはSr元素から選択され、
前記パラメータm、a、b、c、d、e、f、gおよびnは、0.8≦m≦1.2、0.8≦a≦1.2、0.8≦b≦1.2、2≦c≦4、0.0001≦d≦0.1、1.8≦e≦2.2、4≦f≦6、7≦g≦9、および、0.0001≦n≦0.1を満たすことを特徴とする請求項8または9に記載の発光装置。 - 前記発光材料Iは、CaAlSiN3またはSr2Si5N8と同じ結晶構造を有することを特徴とする請求項8から10の何れか一項に記載の発光装置。
- 前記発光材料Iにおいて、前記Mは、CaとSr元素との組み合わせであり、前記Sr元素のM元素に対するモル比はzであり、且つ80%≦z<100%であることを特徴とする請求項8から11の何れか一項に記載の発光装置。
- 前記半導体チップ(2)の放射ピーク波長範囲は、350~500nmおよび/または550~700nmであることを特徴とする請求項8から12の何れか一項に記載の発光装置。
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CN109943330B (zh) * | 2019-03-25 | 2021-05-07 | 常州工程职业技术学院 | 一种Cr3+激活的近红外荧光粉、制备方法及应用 |
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CN113213933B (zh) * | 2021-03-19 | 2022-04-08 | 浙江大学 | 一种宽带近红外荧光陶瓷及其制备方法和应用 |
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US11299672B2 (en) | 2022-04-12 |
WO2019153742A1 (zh) | 2019-08-15 |
KR20220025081A (ko) | 2022-03-03 |
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US20200362239A1 (en) | 2020-11-19 |
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