摘 要

本文阐述了太阳能利用现状和太阳能选择性吸收涂层的研究进展。并且设计了溶胶-凝胶法制备CuCoMnO_x光谱选择性吸收涂层的实验方案并对制成CuCoMnO_x溶胶涂层的各项性能进行了测试和讨论。

以CuCI₂·_·2H₂O，C₄H₁₄MnO₈，COCl₂·6H₂O为前驱体金属盐，无水乙醇为溶剂，柠檬酸为络合剂制备CuCoMnO_x溶胶，用浸渍提拉法制备光谱选择性吸收涂层。采用D/MAXIII型X射线衍射仪测出试样的XRD图谱；用Lamda750型UV-Uis-NIR分光光度计测出其吸收率、用Tensor27型BRUKER红外光谱仪测出其发射率，并算出吸收比；测出样品的SEM图像并观察其表面形貌。通过上述检测结果讨论CuCoMnO_x光谱选择性吸收涂层的吸收性能并分析制备工艺对其性能的影响。

关键词：溶胶-凝胶 CuCoMnO 选择性吸收 吸收率 发射率

Abstract

In this paper, the present status of solar energy utilization and the research progress of solar energy selective absorbing coatings are reviewed. An experimental scheme for the preparation of CuCoMnOx spectrum selective absorbing coatings by sol-gel method was designed and the properties of CuCoMnOx sol coating were tested and discussed.

CuCoMnO_x sol was prepared by using CuCI₂, 2H₂O, C₄H₁₄MnO₈, C_OCl₂, 6H₂O as precursor-metal salt, anhydrous ethanol as solvent and citric acid as complexing agent. spectrally selective absorption coating was prepared by dip-coating method.The XRD spectra of the samples were measured by D/MAXIII type X ray diffractometer；The absorption rate was measured by Lamda750 UV-Uis-NIR spectrophotometer and the emissivity was measured by Tensor27 BRUKER infrared spectrometer. The absorption ratio is calculated by the absorption rate and the emissivity. The SEM image of the sample was measured and its surface morphology was observed. Through the above test results we can discuss the absorption properties of CuCoMnOx spectrum selective absorbing coatings and the influence of preparation process on its performance could be analyzed.

Key word: Sol-gel CuCoMnO Selective absorption

Absorptivity Emissivity

目录

摘要 III

Abstract IV

目录 1

1.文献综述 2

1.1太阳能利用现状 2

1.2选择性吸收涂层研究现状 3

1.2.1太阳能选择性吸收涂层的要求 3

1.2.2选择性吸收涂层的分类 4

1.2.3光谱选择性吸收涂层的制备方法 5

1.3尖晶石型铁氧体涂层的研究现状 6

2. 实验方案与步骤 9

2.1实验设计与流程 9

2.2实验原理 10

2.2.1溶胶—凝胶的制备原理 10

2.3实验原料和设备介绍 12

2.3.1实验药品 12

2.3.2实验、检测仪器与设备 13

2.4溶胶凝胶的制备、提拉镀膜 14

2.4.1CuCoMnOx溶胶的制备 14

2.4.2基片的清洗 16

2.4.3涂层的制备、提拉参数 16

2.5选择性吸收涂层的检测（吸收率、发射率、XRD） 18

3. 实验结果分析与讨论 19

3.1 XRD图像分析 19

3.1.1 XRD测试原理 19

3.1.2 XRD图像及分析结果 20

3.2选择性涂层的性能 20

3.2.1吸收率与发射率的计算 20

3.2.2吸收率的测量和图像 21

3.2.3发射率的测量和图像 23

3.2.4吸收比α/ε_T 24

3.3膜的形貌 24

3.4基片处理工艺（提拉参数）及其影响 25

3.3.1溶胶浓度对吸收率的影响 25

3.3.2提拉参数对实验结果的影响 26

3.3.3煅烧温度对实验结果的影响 27

3.3.4 pH 值对制备CuCoMnO_x涂层的影响 27

3.5结论 28

4研究展望 29

参考文献 30

致谢 32

1.文献综述

1.1太阳能利用现状

随着人类对于能源需求增长和传统矿物能源的日益枯竭，能源问题日益成为制约人类发展的瓶颈，因此开发新的可再生能源才能满足人类的可持续发展的需要。太阳能作为最丰富的环境友好型可再生能源，可以被转化成各种类型的能源加以利用，因此可以重点开发以满足人们日益增长的能源需求。

太阳能利用的基本方式太阳能热利用，太阳能光电利用以及太阳能光化学等。在这几类太阳能利用的方式中，光—热转换的技术应用最为广泛，并且已经形成的成熟的产业链，普遍存在的太阳能热水器就是最好的应用实例。

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