Chalcogenide p-type absorber layer studies of spray pyrolyzed CuZnS thin films for heterojunction solar cell applications

IF 3.8 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Optical Materials Pub Date : 2025-04-15 DOI:10.1016/j.optmat.2025.117036

Deepa , M. Anantha Sunil , Sabina Rahaman , K.B. Jagannatha , Kilari Naveen Kumar

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Abstract

Automated spray pyrolysis technique is used to deposit Copper Zinc Sulphide (CZS) thin films onto the soda lime glass substrates. The various properties of the CZS films are examined by altering the substrate temperature between 250 °C and 350 °C. XRD analysis reveals the formation of a crystalline mixed CuS–ZnS binary composite with preferred orientation along the (111) and (220) planes, which is confirmed by Raman spectroscopy. Morphological studies showed dense flower shaped structures with the increase in substrate temperature. Optical analysis of the as-deposited CuZnS thin films showed absorption coefficient of around 10⁵ cm⁻¹. The band gap energy of prepared CuZnS thin films is found to be in the range of 1.33 eV–1.55 eV. CuZnS films demonstrated p-type conductivity with a carrier concentration of order 10²¹ cm⁻³ and an electrical conductivity 10³ S/cm. XPS analysis confirmed the formation of oxidation states of copper, zinc and sulphur.

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异质结太阳能电池用喷射热解CuZnS薄膜的硫系化物p型吸收层研究

采用自动喷雾热解技术在碱石灰玻璃基板上沉积硫化铜锌（CZS）薄膜。通过改变衬底温度在250°C和350°C之间，测试了cts薄膜的各种性能。XRD分析表明，cu - zns二元复合材料在（111）面和（220）面形成了择优取向的晶体，拉曼光谱也证实了这一点。形态学研究表明，随着基质温度的升高，花状结构致密。光学分析表明，CuZnS薄膜的吸收系数约为105 cm−1。制备的CuZnS薄膜带隙能在1.33 eV ~ 1.55 eV之间。CuZnS薄膜表现出p型电导率，载流子浓度为1021 cm−3阶，电导率为103 S/cm。XPS分析证实了铜、锌和硫的氧化态的形成。

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来源期刊

Optical Materials 工程技术-材料科学：综合

CiteScore

6.60

自引率

12.80%

发文量

1265

审稿时长

38 days

期刊介绍： Optical Materials has an open access mirror journal Optical Materials: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. The purpose of Optical Materials is to provide a means of communication and technology transfer between researchers who are interested in materials for potential device applications. The journal publishes original papers and review articles on the design, synthesis, characterisation and applications of optical materials. OPTICAL MATERIALS focuses on: • Optical Properties of Material Systems; • The Materials Aspects of Optical Phenomena; • The Materials Aspects of Devices and Applications. Authors can submit separate research elements describing their data to Data in Brief and methods to Methods X.