KR100407512B1 - Preparation Method of Green Color Emitting Stroutium-Europium-Thiogallium Phosphor - Google Patents

Preparation Method of Green Color Emitting Stroutium-Europium-Thiogallium Phosphor Download PDF

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KR100407512B1
KR100407512B1 KR10-2001-0008168A KR20010008168A KR100407512B1 KR 100407512 B1 KR100407512 B1 KR 100407512B1 KR 20010008168 A KR20010008168 A KR 20010008168A KR 100407512 B1 KR100407512 B1 KR 100407512B1
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phosphor
green light
light emitting
ncs
europium
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KR20020067818A (en
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허영덕
김동길
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주식회사 이스트웰
허영덕
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
    • C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
    • C09K11/7728—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing europium
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/50—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on rare-earth compounds
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/64—Burning or sintering processes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps

Abstract

본 발명은 녹색 발광 형광체의 제조방법에 관한 것으로, 하기의 화학식 1을 가지는 녹색 발광 형광체를 제조함에 있어서, 형광체 합성에 사용되는 물질로 SrS, Ga[(CH3)2NCS2]3, [(CH3)4N]{Eu[(CH3)2NCS2]4} 및 여분의 황(S)을 사용하고, 이중도가니의 박스형 노에서 600-1200℃의 온도로 소성하는 것을 특징으로 하며, 본 발명에 의하여 독성가스인 H2S를 사용하지 않으므로 안전하게 대량으로 Sr1-xEuxGa2S4형광체를 제조할 수 있다.The present invention relates to a method for manufacturing a green light emitting phosphor. In preparing a green light emitting phosphor having the following Chemical Formula 1, SrS, Ga [(CH 3 ) 2 NCS 2 ] 3 , [( CH 3 ) 4 N] {Eu [(CH 3 ) 2 NCS 2 ] 4 } and excess sulfur (S), characterized in that the firing at a temperature of 600-1200 ℃ in a box-type furnace of a double crucible, Since the present invention does not use the toxic gas H 2 S can be safely produced in large quantities Sr 1-x Eu x Ga 2 S 4 phosphor.

화학식 1Formula 1

Sr1-xEuxGa2S4 Sr 1-x Eu x Ga 2 S 4

(상기 식에서 x는 0.01에서 0.2의 범위 이내의 값을 가진다.)(Wherein x has a value within the range of 0.01 to 0.2).

Description

녹색발광 스트론튬ㆍ유로피움ㆍ티오갈륨 형광체의 제조방법{Preparation Method of Green Color Emitting Stroutium-Europium-Thiogallium Phosphor}Preparation method of Green Color Emitting Stroutium-Europium-Thiogallium Phosphor}

본 발명은 녹색발광 형광체의 제조방법에 관한 것으로, 보다 상세하게는 독성가스인 H2S의 사용이 생략된 녹색 발광 Sr1-xEuxGa2S4형광체의 대량생산 방법에 관한 것이다.The present invention relates to a method for producing a green light emitting phosphor, and more particularly, to a mass production method of a green light emitting Sr 1-x Eu x Ga 2 S 4 phosphor in which the use of H 2 S, which is a toxic gas, is omitted.

형광체는 발광 휘도가 높으므로, 이들 형광체는 고휘도의 발광용 전자 소재에 자주 사용되어진다. 따라서 청색·적색·녹색 발광 형광체의 제조는 전자 소재 산업에서 필수적이다. 특히 발광 성능이 좋은 형광체의 제조하는 것은 매우 중요하다.Since phosphors have high luminescence brightness, these phosphors are frequently used for high luminance light emitting electronic materials. Therefore, the production of blue, red and green light emitting phosphors is essential in the electronic material industry. In particular, it is very important to produce a phosphor having good luminescence performance.

기존의 ZnS:Cu,Al과 Y2O3:Tb와 같은 기존의 녹색 발광 형광체에 비해서 Sr1-xEuxGa2S4형광체는 광 특성이 우수한 녹색발광 형광체로 확인되고 있다. 따라서 Sr1-xEuxGa2S4형광체는 전계발광(EL : electroluminescent), 음극선 발광(cathodoluminescence), 발광 다이오드 (LED : Light Emitting Diode) 분야 등에 널리 적용 가능하다.Compared with conventional green light emitting phosphors such as ZnS: Cu, Al and Y 2 O 3 : Tb, Sr 1-x Eu x Ga 2 S 4 phosphors have been identified as green light emitting phosphors with excellent optical properties. Therefore, the Sr 1-x Eu x Ga 2 S 4 phosphor is widely applicable to electroluminescent (EL), cathodoluminescence, and light emitting diode (LED) fields.

현재까지 Sr1-xEuxGa2S4의 합성은 전형적인 고체상 반응으로 진행되어왔다. 예를 들어 SrCO3, Ga2O3, Eu2O3와 Na2CO3(용융제)를 초기 물질로 사용하고 약 1300℃에서 약 8시간 소성한다. 이때 H2S gas를 계속 흘려준다. 또한 700℃ 이하의 온도에서는 Ar gas를 흘려주어서 화합물이 산화되는 것을 방지시킨다. 따라서 합성을 하는과정이 번거로울 뿐만 아니라 독성가스인 H2S gas를 사용해야 하므로, H2S gas 처리에 많은 노력을 기울려야만 한다. 소량으로 사용되는 연구용 Sr1-xEuxGa2S4형광체는 위에서 언급한 방법으로 합성을 하고 있다.To date, the synthesis of Sr 1-x Eu x Ga 2 S 4 has proceeded with a typical solid phase reaction. For example, SrCO 3 , Ga 2 O 3 , Eu 2 O 3 and Na 2 CO 3 (melting agent) are used as initial materials and fired at about 1300 ° C. for about 8 hours. At this time, continue flowing H 2 S gas. In addition, the Ar gas is flowed at a temperature of 700 ° C. or lower to prevent the compound from being oxidized. Thus, because only the step of the synthesis is cumbersome, not to use the toxic gas, H 2 S gas, must giulryeo a lot of effort into H 2 S gas treatment. Research Sr 1-x Eu x Ga 2 S 4 phosphors used in small amounts are synthesized by the method described above.

전자 소재로 사용될 경우는 대량의 Sr1-xEuxGa2S4형광체를 제조해야만 한다. 그러나 고체상 반응으로 대량의 Sr1-xEuxGa2S4형광체를 제조하려면 엄청난 양의 H2S 가스를 사용해야 하므로 현실적으로 불가능하다.When used as an electronic material, a large amount of Sr 1-x Eu x Ga 2 S 4 phosphor should be prepared. However, it is practically impossible to produce a large amount of Sr 1-x Eu x Ga 2 S 4 phosphors by solid phase reaction, because a huge amount of H 2 S gas must be used.

본 발명은 상기한 바와 같은 제반 문제점을 해결하기 위한 것으로, 종래의 문제점인 독성가스인 H2S 를 사용하지 않고 Sr1-xEuxGa2S4형광체를 제조할 수 있는 방법을 제공하는 것이 본 발명의 목적이다. 본 발명의 다른 목적은 종래의 방법은 튜브 노(tube furnace)를 사용해야 하나, 본 발명에서는 박스 노(box furnace)를 사용하여 Sr1-xEuxGa2S4형광체를 안정적으로 대량으로 제조하는 방법을 제공하는 것이다.The present invention is to solve the above problems, and to provide a method for producing a Sr 1-x Eu x Ga 2 S 4 phosphor without using the conventional problem H 2 S, a toxic gas. It is an object of the present invention. Another object of the present invention is to use a tube furnace in the conventional method, in the present invention using a box furnace (box furnace) to stably produce a large amount of Sr 1-x Eu x Ga 2 S 4 phosphor To provide a way.

도 1은 녹색발광 Sr1-xEuxGa2S4형광체 제조에 사용되는 시료와 이중 도가니의 구조를 나타낸 단면도이다.1 is a cross-sectional view showing the structure of a sample and a double crucible used for producing green light emitting Sr 1-x Eu x Ga 2 S 4 phosphors.

도 2는 본 발명에 의하여 제조된 녹색 발광 Sr1-xEuxGa2S4형광체의 발광 스펙트럼이다.2 is an emission spectrum of the green light - emitting Sr 1-x Eu x Ga 2 S 4 phosphor prepared according to the present invention.

도 3은 본 발명에 의하여 제조된 녹색 발광 Sr1-xEuxGa2S4형광체의 여기 스펙트럼이다.3 is an excitation spectrum of the green light - emitting Sr 1-x Eu x Ga 2 S 4 phosphor prepared according to the present invention.

*도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1 : 외부 도가니 2 : 활성탄1: outside crucible 2: activated carbon

3 : 내부 도가니 4 : SrS3: internal crucible 4: SrS

5 : Ga[(CH3)2NCS2]36 : [(CH3)4N]{Eu[(CH3)2NCS2]4}5: Ga [(CH 3 ) 2 NCS 2 ] 3 6: [(CH 3 ) 4 N] {Eu [(CH 3 ) 2 NCS 2 ] 4 }

7 : 황7: sulfur

녹색발광 Sr1-xEuxGa2S4형광체는 하기의 화학식 1로 표시된다.The green light emitting Sr 1-x Eu x Ga 2 S 4 phosphor is represented by the following Chemical Formula 1.

화학식 1Formula 1

Sr1-xEuxGa2S4 Sr 1-x Eu x Ga 2 S 4

(상기 식에서 x는 0.01에서 0.2의 범위 이내의 값을 가진다.)(Wherein x has a value within the range of 0.01 to 0.2).

본 발명의 녹색 발광 Sr1-xEuxGa2S4형광체의 제조과정은 도 1과 같이 이중도가니를 사용하며, 내부의 도가니에는 합성에 필요한 시료를 넣고, 외부의 도가니에는 산화를 방지하기 위해서 활성탄을 넣는다.In the manufacturing process of the green light emitting Sr 1-x Eu x Ga 2 S 4 phosphor of the present invention, a double crucible is used as shown in FIG. 1, and a sample necessary for synthesis is put in an inner crucible, and an external crucible is used to prevent oxidation. Add activated carbon.

Sr1-xEuxGa2S4형광체의 제조는 형광체의 조성비에 따른 SrS, Ga[(CH3)3NCS2]3, [(CH3)4N]{Eu[(CH3)2NCS2]4}를 섞은 후, 그리고 여분의 S의 양을 1.0에서 50.0 중량% 범위에서 첨가한 다음, 600∼1200℃의 온도에서 소결하여 Sr1-xEuxGa2S4형광체를 얻는다.Preparation of Sr 1-x Eu x Ga 2 S 4 phosphors was performed by SrS, Ga [(CH 3 ) 3 NCS 2 ] 3 , [(CH 3 ) 4 N] {Eu [(CH 3 ) 2 NCS 2 ] 4 }, and the amount of excess S is added in the range of 1.0 to 50.0% by weight, and then sintered at a temperature of 600 ~ 1200 ℃ to obtain a Sr 1-x Eu x Ga 2 S 4 phosphor.

Ga[(CH3)2NCS2]3은 Ga(NO)3·xH2O와 (CH3)2NCS2Na·xH2O를 공침하여 합성한다. 또한 [(CH3)4N]{Eu[(CH3)2NCS2]4}는 (CH3)4NCl, Eu(NO)3·6H2O, (CH3)2NCS2Na·xH2O를 공침하여 얻는다.Ga [(CH 3 ) 2 NCS 2 ] 3 is synthesized by coprecipitation of Ga (NO) 3 .xH 2 O and (CH 3 ) 2 NCS 2 Na.xH 2 O. Further, [(CH 3 ) 4 N] {Eu [(CH 3 ) 2 NCS 2 ] 4 } is (CH 3 ) 4 NCl, Eu (NO) 3 .6H 2 O, (CH 3 ) 2 NCS 2 Na.xH Obtained by reciprocating 2 O.

본 발명에 따른 형광체를 구성하는 모결정의 소결시에 녹는점을 낮춰주어 결정성장을 용이하게 해주는 용융제로서 염화나트륨, 불화나트륨, 불화칼슘, 불화알루미늄, 그리고 불화바륨 등이 사용될 수 있다. 용융제의 첨가량은 1.0 에서 30.0 중량%의 범위가 적절하다. 이 범위를 초과하면 형광체의 결정구조가 변화하기 시작한다.Sodium chloride, sodium fluoride, calcium fluoride, aluminum fluoride, barium fluoride and the like may be used as a melting agent to lower the melting point during sintering of the mother crystal constituting the phosphor according to the present invention to facilitate crystal growth. The addition amount of the melting agent is suitably in the range of 1.0 to 30.0% by weight. If this range is exceeded, the crystal structure of the phosphor starts to change.

본 발명에 따른 Sr1-xEuxGa2S4형광체는 자외선에서부터 청색을 흡수하여 녹색을 발광을 하게 되는 것은 활성제인 유로피움의 역할에 크게 영향을 받는다. 따라서 모결정인 Sr1-xGa2S4의 조성 및 결정성에 따라서 활성제 원자의 d 궤도함수의 에너지 준위가 변화되어, 형광체의 발광의 세기 및 발광의 영역과 같은 광학적 성질이 크게 영향을 받는다. 따라서 적절한 조성의 모결정 선택이 녹색 발광 Sr1-xEuxGa2S4형광체의 성능을 크게 좌우하게 된다. 뿐만 아니라, 활성제인 유로피움의 산화상태에 따라서 형광체의 광학적 성질이 크게 영향을 받는다. 따라서 외부의 도가니에 산화를 방지하기 위해서 넣는 적절한 종류의 활성탄은 Sr1-xEuxGa2S4형광체의 성능에 매우 중요한 역할을 한다.Sr 1-x Eu x Ga 2 S 4 phosphor according to the present invention absorbs blue from ultraviolet rays and emits green light, which is greatly influenced by the role of europium, an activator. Therefore, the energy level of the d orbital function of the activator atom is changed depending on the composition and crystallinity of the Sr 1-x Ga 2 S 4 base crystal, and optical properties such as the intensity of luminescence of the phosphor and the region of luminescence are greatly affected. Therefore, the selection of a suitable crystal composition greatly influences the performance of the green light emitting Sr 1-x Eu x Ga 2 S 4 phosphor. In addition, the optical properties of the phosphor are greatly influenced by the oxidation state of the activator europium. Therefore, the appropriate kind of activated carbon to prevent oxidation in the external crucible plays a very important role in the performance of the Sr 1-x Eu x Ga 2 S 4 phosphor.

이하, 본 발명을 구체적인 실시 예를 참조하여 상세히 설명한다. 이하의 실시 예들은 본 발명을 예시하기 위한 것으로서 본 발명을 국한시키는 것으로 이해되어져서는 안될 것이다.Hereinafter, the present invention will be described in detail with reference to specific embodiments. The following examples are intended to illustrate the invention and should not be understood as limiting the invention.

<제조실시예 1 ∼8 및 비교제조예 1,2><Production Examples 1 to 8 and Comparative Production Examples 1,2>

아래의 표 1에 나타난 바와 같은 조성으로 각 화합물들을 혼합하고, 고온에서 소결시켜 본 발명에 따른 녹색 발광 Sr1-xEuxGa2S4형광체를 수득하였다.Each compound was mixed with a composition as shown in Table 1 below, and sintered at a high temperature to obtain a green light - emitting Sr 1-x Eu x Ga 2 S 4 phosphor according to the present invention.

Ga : Ga[(CH3)2NCS2]3 Ga: Ga [(CH 3 ) 2 NCS 2 ] 3

Eu : [(CH3)4N]{Eu[(CH3)2NCS2]4}Eu: [(CH 3 ) 4 N] {Eu [(CH 3 ) 2 NCS 2 ] 4 }

상기 표 1에서 제조실시예 1, 2, 3은 활성제의 양을 변화시키면서 형광체를 합성하였다. 제조실시예 1, 4, 5는 여분의 황의 양을 변화시키면서 형광체를 합성하였다. 제조실시예 1, 6은 소성 온도를 변화시킨 것이다. 제조실시예 1, 7, 8은 용융제의 종류를 변화시키면서 형광체를 합성하였다.In Table 1, Preparation Examples 1, 2, and 3 synthesized phosphors while varying the amount of active agent. Preparation Examples 1, 4, and 5 synthesized phosphors while varying the amount of excess sulfur. In Production Examples 1 and 6, the firing temperature was changed. In Preparation Examples 1, 7, 8, phosphors were synthesized while changing the type of the melting agent.

<실시예 1∼8 및 비교예 1,2><Examples 1-8 and Comparative Examples 1,2>

제조실시예 1∼8 및 비교제조예 1,2에 의하여 얻어진 형광체의 발광 스펙트럼은 도 2와 같았다. 발광 스펙트럼을 얻기 위해서 여기 파장은 450nm으로 고정하였다. 도 2에 따르면 제조 실시 예 1, 2, 3의 경우 활성제인 유로피움의 양이 0.04 mol 일 때 최대 발광 세기를 얻는 것으로 나타내었다. 제조실시예 1, 4, 5처럼 여분의 황의 양에 따라서 발광 세기가 변함을 확인하였다. 그리고 제조실시예 1, 6처럼 소성온도에 따라서 발광세기가 변함을 알 수 있다. 뿐만 아니라 제조실시예 1, 7, 8처럼 용융제의 종류가 변화됨에 따라서 형광체의 발광 효율 역시 변함을 확인하였다. 특히, 여분의 황을 첨가하지 아니 할 경우에는 발광 세기가 급격하게 감소함이 확인되었다.The emission spectra of the phosphors obtained in Production Examples 1 to 8 and Comparative Production Examples 1 and 2 were as shown in FIG. In order to obtain the emission spectrum, the excitation wavelength was fixed at 450 nm. According to FIG. 2, in Examples 1, 2, and 3, the maximum emission intensity was obtained when the amount of europium, the active agent, was 0.04 mol. It was confirmed that the luminescence intensity changed according to the amount of excess sulfur as in Preparation Examples 1, 4 and 5. And as in Preparation Examples 1, 6 it can be seen that the light emission intensity is changed according to the firing temperature. In addition, it was confirmed that the luminous efficiency of the phosphor also changed as the type of the melting agent was changed as in Preparation Examples 1, 7, and 8. In particular, it was confirmed that the emission intensity was drastically reduced when the excess sulfur was not added.

따라서 녹색 발광 Sr1-xEuxGa2S4형광체의 발광 특성은 활성제의 양, 용융제의 종류, 소성 온도, 그리고 여분의 황의 양 등 여러 조건에 따라서 크게 영향을 받는다. 그러므로 녹색 발광 Sr1-xEuxGa2S4형광체를 제조 할 때는 활성제의 양, 용융제의 종류, 소성 온도, 그리고 여분의 황의 양 등을 적절하게 선택해야만 한다.Therefore, the luminescence properties of the green luminescent Sr 1-x Eu x Ga 2 S 4 phosphor are greatly influenced by various conditions such as the amount of the activator, the type of the melting agent, the firing temperature, and the amount of excess sulfur. Therefore, when manufacturing green light emitting Sr 1-x Eu x Ga 2 S 4 phosphor, the amount of active agent, the type of melting agent, the firing temperature, and the amount of excess sulfur should be appropriately selected.

녹색 발광 Sr1-xEuxGa2S4형광체중 제조실시예 1의 여기 스펙트럼은 도 3과 같았다. 이때 측정파장은 536nm으로 고정하고 여기 스펙트럼을 얻었다. 도 3에서 확인되는 바와 같이, Sr1-xEuxGa2S4형광체의 여기 가능영역은 320∼480nm 이었다. 따라서 Sr1-xEuxGa2S4형광체는 자외선의 일부분과 청색 영역을 흡수하여 녹색을 발광한다.Excitation spectrum of Preparation Example 1 of the green light - emitting Sr 1-x Eu x Ga 2 S 4 phosphor was as shown in FIG. 3. At this time, the measurement wavelength was fixed at 536 nm and an excitation spectrum was obtained. As confirmed in FIG. 3, the excitation possible region of the Sr 1-x Eu x Ga 2 S 4 phosphor was 320 to 480 nm. Therefore, the Sr 1-x Eu x Ga 2 S 4 phosphor absorbs a part of ultraviolet rays and a blue region to emit green light.

본 발명은 독성가스인 H2S를 사용하여 Sr1-xEuxGa2S4형광체를 합성하는 종래의 방법에 비해서, H2S를 사용하지 않으므로 안전하게 대량으로 Sr1-xEuxGa2S4형광체를 제조할 수 있을 뿐만 아니라, 제조과정에서 형광체의 산화방지를 위하여 불활성기체를 계속 흘러 주어야 하는 번거로움에서 벗어 날 수 있다. 이에 따라 본 발명에 의하여 Sr1-xEuxGa2S4형광체는 안전하게 대량생산이 가능하므로 전계발광(EL : electroluminescent), 음극선 발광(cathodoluminescence), 발광 다이오드 (LED : Light Emitting Diode) 분야 등에 널리 적용 가능하다.Compared to the conventional method of synthesizing Sr 1-x Eu x Ga 2 S 4 phosphor by using H 2 S, which is a toxic gas, the present invention safely uses Sr 1-x Eu x Ga 2 in large quantities because H 2 S is not used. Not only can the S 4 phosphor be manufactured, but also the manufacturing process can be avoided from having to continuously flow inert gas to prevent oxidation of the phosphor. Accordingly, since the Sr 1-x Eu x Ga 2 S 4 phosphor can be safely mass-produced according to the present invention, it is widely used in the field of electroluminescent (EL), cathodoluminescence, and light emitting diode (LED). Applicable

Claims (4)

하기의 화학식 1을 가지는 녹색 발광 형광체를 제조함에 있어서, 이중도가니의 내부 도가니에 형광체 합성에 사용되는 물질로 SrS, Ga[(CH3)2NCS2]3, [(CH3)4N]{EU[(CH3)2NCS2]4} 및 여분의 황(S)을 넣고, 외부 도가니에는 활성제의 산화를 방지하기 위해서 활성탄을 넣은 후 600-1200℃의 온도로 소성하는 것을 특징으로 하는 녹색발광 스트론튬·유로피움·티오갈륨(Sr1-XEUXGa2S4) 형광체의 제조방법.In preparing a green light emitting phosphor having the following Chemical Formula 1, SrS, Ga [(CH 3 ) 2 NCS 2 ] 3 , [(CH 3 ) 4 N] { EU [(CH 3 ) 2 NCS 2 ] 4 } and excess sulfur (S) are added, and the outer crucible is activated with carbon in order to prevent oxidation of the activator, and greens at a temperature of 600-1200 ° C. A method for producing a light emitting strontium europium thioglium (Sr 1-X EU X Ga 2 S 4 ) phosphor. 화학식 1Formula 1 Sr1-XEUXGa2S4 Sr 1-X EU X Ga 2 S 4 (상기 식에서 x는 0.01에서 0.2의 범위 이내의 값을 가진다.)(Wherein x has a value within the range of 0.01 to 0.2). 제 1항에 있어서, 모결정에 결정성장을 위한 용융제로서 염화나트륨, 불화나트륨, 불화칼슘, 불화알루미늄, 그리고 불화바륨 중에서 선택된 1종 이상을 0.1에서 30.0 중량%의 범위에서 첨가하는 것을 특징으로 하는 녹색발광 스트론튬·유로피움·티오갈륨(Sr1-XEUXGa2S4) 형광체의 제조방법.The method of claim 1, wherein at least one selected from sodium chloride, sodium fluoride, calcium fluoride, aluminum fluoride, and barium fluoride is added to the mother crystal in the range of 0.1 to 30.0 wt%. Method for producing green light-emitting strontium europium thioglium (Sr 1-X EU X Ga 2 S 4 ) phosphor. 제 1항에 있어서, 여분의 황(S)의 투입량은 1.0에서 50.0 중량% 범위인 것을 특징으로 하는 녹색발광 스트론튬·유로피움·티오갈륨(Sr1-XEUXGa2S4) 형광체의 제조방법.The method of claim 1, wherein the amount of surplus sulfur (S) is in the range of 1.0 to 50.0% by weight of the production of green light emitting strontium europium thioglium (Sr 1-X EU X Ga 2 S 4 ) phosphor Way. 삭제delete
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