Fabrication and optoelectronic properties of ZnO nanoparticle/P3HT heterojunction photodiode

• Published in: Microelectronic engineering Vol. 163; pp. 32 - 35
• Main Authors: Yuan, Zhaolin, Fu, Mingxing, Ren, Yajie, Huang, Wendeng, Shuai, Chunjiang
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.09.2016
• Subjects: Photocurrent; Photodiode; Rectifying ratio; ZnO nanoparticles; Rectifying ratio; Photocurrent; ZnO nanoparticles; Photodiode
• ISSN: 0167-9317; 1873-5568
• DOI: 10.1016/j.mee.2016.06.005

In this paper, we fabricated a simple inorganic-organic hybrid heterojunction photodiode using synthetic ZnO nanoparticles and regioregular poly(3-hexylthiophene-2,5-diyl) (P3HT), the electrical characteristics and several key parameters of the resulting ITO/ZnO nanoparticles/P3HT/Ag device were investigated. The results showed that the ITO/ZnO nanoparticles/P3HT/Ag device exhibited good rectifying behaviour in the dark and under illumination with different light intensities. Its maximum rectifying ratio, turn on voltage, ideality factor and reverse saturation current in the dark were 504, 0.4V, 1.69 and 1.52×10−8A, respectively. In addition, under 100mW/cm2 illumination power, the maximum rectifying ratio of the photodiode was 19.9 at ±2V, a great amount of photocurrent was produced in the device. [Display omitted] •The fabricated photodiode had a simple structure.•The photodiode showed good rectifying behaviours in the dark and under illumination with different light intensities.•The photodiode has low turn on voltage•The rectification ratio of the photodiode in the dark exhibited a high value.