Organic photodetectors based on copper phthalocyanine films prepared by a multiple drop casting method

• Published in: Organic electronics Vol. 66; pp. 183 - 187
• Main Authors: Wang, Chunrui, Chen, Xing, Chen, Fei, Shao, Junfeng
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.03.2019
• Subjects: Multiple drop casting; Organic; Photodetector; Phthalocyanine; Phthalocyanine; Multiple drop casting; Photodetector; Organic
• ISSN: 1566-1199; 1878-5530
• DOI: 10.1016/j.orgel.2018.12.035

Organic Photodetectors have high potential for use in the next generation of information technology systems because of the mechanical flexibility, large-area detection and low production cost of organic materials for photodetectors. A red light photodetector based on phthalocyanine compounds is one of the representations. There are some disadvantages for the common methods to fabricate phthalocyanine films, such as expenses of high operation temperature, ultrahigh vacuum processing, large materials loss, complicated operation, large energy consumption and poor solubility. To solve these problems, a multiple drop casting method is proposed in this paper. This method could prepare phthalocyanine films from a relatively dilute solution, and give an alternative way to fabricate the phthalocyanine photodetectors especially for the phthalocyanine with poor solubility. [Display omitted] •Phthalocyanine based organic photodetectors have received more and more attention.•The common methods to fabricate phthalocyanine films have some disadvantages.•A multiple drop casting method could prepare phthalocyanine films from a relatively dilute solution, and it is a resin-free way.•Photodetector based on phthalocyanine film prepared by multiple drop casting method has a relatively high responsivity and low dark current.