Journal of Inorganic Materials ›› 2022, Vol. 37 ›› Issue (10): 1109-1115.DOI: 10.15541/jim20220030

Special Issue: 【能源环境】量子点

• RESEARCH ARTICLE • Previous Articles     Next Articles

Preparation and Characterization of Ag2Se-based Ink Used for Inkjet Printing

ZHANG Keyi1(), ZHENG Qi1(), WANG Lianjun1, JIANG Wan1,2()   

  1. 1. State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
    2. Institute of Functional Materials, Donghua University, Shanghai 201620, China
  • Received:2021-01-18 Revised:2022-02-22 Published:2022-10-20 Online:2022-07-08
  • Contact: JIANG Wan, professor. E-mail: wanjiang@dhu.edu.cn;
    ZHENG Qi, associate professor. E-mail: qi.zheng@dhu.edu.cn
  • About author:ZHANG Keyi (1997-), male, Master candidate. E-mail: zhangkeyiwork@outlook.com
  • Supported by:
    Fundamental Research Funds for the Central Universities(2232020A-02);Innovation Program of Shanghai Municipal Education Commission(2021-01-07-00-03-E00110);Shanghai Science & Technology Committee(20JC1415200)

Abstract:

Preparation of silver selenide (Ag2Se) based thin films is significant to the micro devices. However, most of reported methods for preparing Ag2Se films have not achieved the accuracy control and flexible pattern design of films. Inkjet printing technology is believed to provide a valid approach to solve this problem by which combination Ag2Se and inkjet printing technology shows high value and importance. In this work, Ag2Se nanoparticles were synthesized by solvothermal method and then dispensed into different solvents to obtain the ink with high stability. Jetting parameters were further developed to achieve the jetting of Ag2Se ink and optimize the morphology of droplets. Ag2Se thin films were prepared on polyimide substrates via inkjet printing with different printing layers. As-printed films were finally annealed to increase the crystalline and density. The phase and surface morphology of Ag2Se films were characterized and the electrical conductivity of the films was measured by using four-probe measurement. Ag2Se films can achieve higher density and crystallinity with ink concentration and printing layers increasing, which leads to higher electrical conductivity. Improvement of structure and performance of Ag2Se films result from the increasing deposition and stacking density of Ag2Se nanoparticles. The electrical conductivity of inkjet-printed Ag2Se film can reach as high as 399 S·cm-1 at the ink concentration of 5 mg·mL-1 and the number of printing layers of 40, which provides a new orientation to prepare Ag2Se based films and devices.

Key words: inkjet printing, Ag2Se, ink, electrical conductivity

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