CN106784065A - 用于制备低成本宽谱带光敏电阻的光敏材料 - Google Patents
用于制备低成本宽谱带光敏电阻的光敏材料 Download PDFInfo
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- UHYPYGJEEGLRJD-UHFFFAOYSA-N cadmium(2+);selenium(2-) Chemical compound [Se-2].[Cd+2] UHYPYGJEEGLRJD-UHFFFAOYSA-N 0.000 claims abstract description 15
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- NGDQQLAVJWUYSF-UHFFFAOYSA-N 4-methyl-2-phenyl-1,3-thiazole-5-sulfonyl chloride Chemical compound S1C(S(Cl)(=O)=O)=C(C)N=C1C1=CC=CC=C1 NGDQQLAVJWUYSF-UHFFFAOYSA-N 0.000 claims description 4
- DFCYEXJMCFQPPA-UHFFFAOYSA-N scandium(3+);trinitrate Chemical compound [Sc+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O DFCYEXJMCFQPPA-UHFFFAOYSA-N 0.000 claims description 4
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- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 1
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Abstract
本发明公开了用于制备低成本宽谱带光敏电阻的光敏材料,利用廉价的过渡金属硝酸盐具有同稀土硝酸盐类似的化学特性,采用过渡金属硝酸盐替代稀土硝酸盐,通过在宽谱带光敏电阻材料CdTe、CdS、CdSe中掺杂质量百分比为1%的过渡金属硝酸盐,在降低宽谱带光敏电阻生产成本的同时保证宽谱带光敏电阻灵敏度损失较小,使宽谱带光敏电阻灵敏度在可接受的范围内,利用本发明提供的制备方法所得廉价宽谱带光敏电阻具有价格低廉、灵敏度有保障的优点。
Description
技术领域
本发明涉及光敏电阻技术领域,具体地,涉及用于制备低成本宽谱带光敏电阻的光敏材料。
背景技术
能够同时在可见光和近红外光照射条件下工作的宽谱带光敏电阻广泛应用于光电检测控制系统,特别是近红外光检测控制系统,如红外成像,红外感应等。目前,宽谱带光敏电阻通常由附在陶瓷基体表面的光敏材料层电联两个电极组成,光敏电阻材料对宽谱带光敏电阻的性能起决定性作用。宽谱带光敏电阻材料多采用在对可见光敏感的CdS、CdSe、CdCl2混合物中掺杂CdTe量子点,利用CdTe量子点的量子限域效应产生红移特性,把光谱响应谱带扩展到近红外光光谱。但是,现有宽谱带光敏电阻材料主要存在的问题之一是:灵敏度低,难以满足现代光电检测控制系统对宽谱带光敏电阻灵敏度的要求。国内外主要通过添加稀土硝酸盐材料来提高宽谱带光敏电阻的灵敏度。虽然稀土硝酸盐材料大幅提高了宽谱带光敏电阻的灵敏度,但是稀土硝酸盐材料价格昂贵,导致宽谱带光敏电阻生产成本高,成为宽谱带光敏电阻推广应用的难题。因此需要提供一种灵敏度高、价格便宜的宽谱带光敏电阻,以满足光电检测控制系统对宽谱带光敏电阻高灵敏度和廉价的双项要求。
发明内容
本发明的目的在于,针对上述问题,提出用于制备低成本宽谱带光敏电阻的光敏材料及该光敏电阻制备方法,以满足光电检测控制系统对宽谱带光敏电阻高灵敏度和廉价的双项要求。
为实现上述目的,本发明采用的技术方案是:用于制备低成本宽谱带光敏电阻的光敏材料,所述光敏材料由低成本宽谱带光敏溶液喷涂在光敏电阻的陶瓷基体的表面形成,所述低成本宽谱带光敏溶液包括混合物和离子水,所述混合物由以下重量百分比的各组分组成:
CdTe 37%-57%,CdS 20%-40%,CdSe 10%-30%,余量为过渡金属硝酸盐;
将混合物溶解在离子水中得到低成本宽谱带光敏材料溶液,所述光敏溶液中混合物与离子水的质量百分比为,混合物25%-45%,离子水55%-75%。
进一步地,所述过渡金属硝酸盐为硝酸钪、硝酸钇或硝酸锆中的任一种。
进一步地,所述混合物各组分的重量百分比CdTe为47%,CdS 30%,CdSe 20%,过渡金属硝酸盐3%;
所述光敏材料溶液中混合物与离子水的质量百分比为,混合物35%,离子水65%。
制备低成本宽谱带光敏电阻的方法,包括以下步骤:
步骤1:制备陶瓷基体;
步骤2:配置低成本宽谱带光敏溶液;
步骤3:将低成本宽谱带光敏溶液喷涂在陶瓷基体的表面,形成低成本宽谱带光敏材料层;
步骤4:将步骤3喷涂后的陶瓷基体静置10-30分钟后,放入900℃-1100℃恒温烘箱中烘烤10-30分钟;
步骤5:将两个电极安装在步骤4形成的低成本宽谱带光敏材料层两端,得到低成本宽谱带光敏电阻主体;
步骤6:在低成本宽谱带电阻主体表面喷涂隔离层,得到低成本宽谱带光敏电阻。
进一步地,步骤2中,所述低成本宽谱带光敏溶液,包括混合物和离子水,所述混合物由以下重量百分比的各组分组成:
CdTe 37%-57%,CdS 20%-40%,CdSe 10%-30%,余量为过渡金属硝酸盐;
将混合物溶解在离子水中得到低成本宽谱带光敏材料溶液,所述光敏溶液中混合物与离子水的质量百分比为,混合物25%-45%,离子水55%-75%。
进一步地,所述步骤4具体为,将步骤3喷涂后的陶瓷基体静置20分钟后,放入1000℃恒温烘箱中烘烤20分钟
进一步地,所述陶瓷基体由纯度为90%以上的三氧化二铝材料制成。
进一步地,步骤3具体为,将步骤S2所得的低成本宽谱带光敏材料溶液喷涂在陶瓷基体表面,喷涂5次,所述低成本宽谱带光敏材料层厚度为4微米。
进一步地,步骤6具体为,利用环氧树脂在光敏电阻主体表面,形成隔离层,所述隔离层厚度为4微米。
进一步地,混合物各组分的重量百分比CdTe为47%,CdS 30%,CdSe 20%,过渡金属硝酸盐3%;
所述光敏材料溶液中混合物与离子水的质量百分比为,混合物35%,离子水65%。
本发明各实施例的用于制备低成本宽谱带光敏电阻的光敏材料及该光敏电阻制备方法,利用廉价的过渡金属硝酸盐具有同稀土硝酸盐类似的化学特性,采用过渡金属硝酸盐替代稀土硝酸盐,通过在宽谱带光敏电阻材料CdTe、CdS、CdSe中掺杂质量百分比为1%的过渡金属硝酸盐,在降低宽谱带光敏电阻生产成本的同时保证宽谱带光敏电阻灵敏度损失较小,使宽谱带光敏电阻灵敏度在可接受的范围内,利用本发明提供的制备方法所得廉价宽谱带光敏电阻具有价格低廉、灵敏度有保障的优点。
本发明的其它特征和优点将在随后的说明书中阐述,并且,部分地从说明书中变得显而易见,或者通过实施本发明而了解。
下面通过附图和实施例,对本发明的技术方案做进一步的详细描述。
附图说明
附图用来提供对本发明的进一步理解,并且构成说明书的一部分,与本发明的实施例一起用于解释本发明,并不构成对本发明的限制。在附图中:
图1为本发明实施例所述的光敏电阻结构图。
结合附图,本发明实施例中附图标记如下:
1-陶瓷基体;2-光敏材料层;3-电极。
具体实施方式
以下结合附图对本发明的优选实施例进行说明,应当理解,此处所描述的优选实施例仅用于说明和解释本发明,并不用于限定本发明。
结合图1的结构,具体地,用于制备低成本宽谱带光敏电阻的光,所述光敏材料由低成本宽谱带光敏溶液喷涂在光敏电阻的陶瓷基体的表面形成,所述低成本宽谱带光敏溶液包括混合物和离子水,所述混合物由以下重量百分比的各组分组成:
CdTe 37%-57%,CdS 20%-40%,CdSe 10%-30%,余量为过渡金属硝酸盐;
将混合物溶解在离子水中得到低成本宽谱带光敏材料溶液,所述光敏溶液中混合物与离子水的质量百分比为,混合物25%-45%,离子水55%-75%。
进一步地,所述过渡金属硝酸盐为硝酸钪、硝酸钇或硝酸锆中的任一种。
进一步地,所述混合物各组分的重量百分比CdTe为47%,CdS 30%,CdSe 20%,过渡金属硝酸盐3%;
所述光敏材料溶液中混合物与离子水的质量百分比为,混合物35%,离子水65%。
所述方法包括以下操作步骤:
S1,制备陶瓷基体;
S2,配置廉价宽谱带光敏溶液;
S3,将廉价宽谱带光敏溶液喷涂在陶瓷基体的表面,形成廉价宽谱带光敏材料层;
S4,将喷涂后的陶瓷基体静置20分钟后,放入1000℃恒温烘箱中烘烤20分钟;
S5,将两个电极安装在形成廉价宽谱带光敏材料层两端,得到廉价宽谱带光敏电阻主体。
S6,在廉价宽谱带电阻主体表面喷涂隔离层,得到廉价宽谱带光敏电阻。
优选地,所述步骤S1具体为:用纯度为90%以上的三氧化二铝材料制备所需形状的陶瓷基体。
优选地,所述步骤S2具体为:
首先,按照以下配比配置红外光光敏溶液并将各原料混合均匀后得到红外光光敏材料层混合物:
CdTe 47%(重量百分比)
CdS 30%(重量百分比)
CdSe 20%(重量百分比)
过渡金属硝酸盐 3%(重量百分比)
所述的过渡金属硝酸盐为硝酸钪、硝酸钇和硝酸锆中的一种。
然后,将廉价宽谱带光敏材料层混合物溶解在离子水中得到廉价宽谱带光敏材料溶液,其中廉价宽谱带光敏材料溶液中,廉价宽谱带光敏材料层混合物的质量百分比为35%,离子水的质量百分比为65%。
优选地,所述步骤S3具体为:将步骤S2所得的廉价宽谱带光敏材料溶液喷涂在陶瓷基体表面,喷涂5次,所述廉价宽谱带光敏材料层厚度为4微米。
优选地,所述步骤S6具体为:将环氧树脂在步骤S2所得的光敏电阻主体表面,形成隔离层,所述隔离层厚度为4微米。
当在上述取值范围内取值时,利用上述给出的百分比制备的电阻灵敏度是最优的。而范围内的其他数值(包括端点值)的灵敏度仅次于上述公开的具体数值。
实际应用表明:
提供一种廉价宽谱带光敏电阻及其制备方法,利用廉价的过渡金属硝酸盐具有同稀土硝酸盐类似的化学特性,采用过渡金属硝酸盐替代稀土硝酸盐,通过在宽谱带光敏电阻材料CdTe、CdS、CdSe中掺杂质量百分比为1%的过渡金属硝酸盐,在降低宽谱带光敏电阻生产成本的同时保证宽谱带光敏电阻灵敏度损失较小,使宽谱带光敏电阻灵敏度在可接受的范围内,利用本发明提供的制备方法所得廉价宽谱带光敏电阻具有价格低廉、灵敏度有保障的优点。至少可以达到以下有益效果:
最后应说明的是:以上所述仅为本发明的优选实施例而已,并不用于限制本发明,尽管参照前述实施例对本发明进行了详细的说明,对于本领域的技术人员来说,其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换。凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。
Claims (10)
1.用于制备低成本宽谱带光敏电阻的光敏材料,其特征在于,所述光敏材料由低成本宽谱带光敏溶液喷涂在光敏电阻的陶瓷基体的表面形成,所述低成本宽谱带光敏溶液包括混合物和离子水,所述混合物由以下重量百分比的各组分组成:
CdTe 37%-57%,CdS 20%-40%,CdSe 10%-30%,余量为过渡金属硝酸盐;
将混合物溶解在离子水中得到低成本宽谱带光敏材料溶液,所述光敏溶液中混合物与离子水的质量百分比为,混合物25%-45%,离子水55%-75%。
2.根据权利要求1所述的用于制备低成本宽谱带光敏电阻的光敏材料,其特征在于,所述过渡金属硝酸盐为硝酸钪、硝酸钇或硝酸锆中的任一种。
3.根据权利要求2所述的用于制备低成本宽谱带光敏电阻的光敏材料,其特征在于,所述混合物各组分的重量百分比CdTe为47%,CdS 30%,CdSe 20%,过渡金属硝酸盐3%;
所述光敏材料溶液中混合物与离子水的质量百分比为,混合物35%,离子水65%。
4.制备低成本宽谱带光敏电阻的方法,其特征在于,包括以下步骤:
步骤1:制备陶瓷基体;
步骤2:配置低成本宽谱带光敏溶液;
步骤3:将低成本宽谱带光敏溶液喷涂在陶瓷基体的表面,形成低成本宽谱带光敏材料层;
步骤4:将步骤3喷涂后的陶瓷基体静置10-30分钟后,放入900℃-1100℃恒温烘箱中烘烤10-30分钟;
步骤5:将两个电极安装在步骤4形成的低成本宽谱带光敏材料层两端,得到低成本宽谱带光敏电阻主体;
步骤6:在低成本宽谱带电阻主体表面喷涂隔离层,得到低成本宽谱带光敏电阻。
5.根据权利要求4所述的制备低成本宽谱带光敏电阻的方法,其特征在于,步骤2中,所述低成本宽谱带光敏溶液,包括混合物和离子水,所述混合物由以下重量百分比的各组分组成:
CdTe 37%-57%,CdS 20%-40%,CdSe 10%-30%,余量为过渡金属硝酸盐;
将混合物溶解在离子水中得到低成本宽谱带光敏材料溶液,所述光敏溶液中混合物与离子水的质量百分比为,混合物25%-45%,离子水55%-75%。
6.根据权利要求4所述的制备低成本宽谱带光敏电阻的方法,其特征在于,所述步骤4具体为,将步骤3喷涂后的陶瓷基体静置20分钟后,放入1000℃恒温烘箱中烘烤20分钟。
7.根据权利要求4所述的制备低成本宽谱带光敏电阻的方法,其特征在于,所述陶瓷基体由纯度为90%以上的三氧化二铝材料制成。
8.根据权利要求4所述的制备低成本宽谱带光敏电阻的方法,其特征在于,步骤3具体为,将步骤S2所得的低成本宽谱带光敏材料溶液喷涂在陶瓷基体表面,喷涂5次,所述低成本宽谱带光敏材料层厚度为4微米。
9.根据权利要求4所述的制备低成本宽谱带光敏电阻的方法,其特征在于,步骤6具体为,利用环氧树脂在光敏电阻主体表面,形成隔离层,所述隔离层厚度为4微米。
10.根据权利要求5所述的制备低成本宽谱带光敏电阻的方法,其特征在于,所述混合物各组分的重量百分比CdTe为47%,CdS 30%,CdSe 20%,过渡金属硝酸盐3%;
所述光敏材料溶液中混合物与离子水的质量百分比为,混合物35%,离子水65%。
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