Poly(3‐hexylthiophene)/Gold Nanoparticle Hybrid System with an Enhanced Photoresponse for Light‐Controlled Electronic Devices |
| |
Authors: | Su‐Ting Han Ye Zhou Qing‐Dan Yang Chun‐Sing Lee V A L Roy |
| |
Institution: | Department of Physics and Materials Science and Center of Super‐Diamond and Advanced Films (COSDAF), City University of Hong Kong, , Hong Kong SAR |
| |
Abstract: | Light‐controlled electrical behavior of polymer/nanoparticle hybrid system in ambient condition is demonstrated. By embedding gold nanoparticles (Au NPs) in a poly(3‐hexylthiophene) (P3HT) matrix, the photoresponses of the nanocomposite films are enhanced. The electrical behavior of the P3HT/Au NPs nanocomposite transistors and inverters are tuned over a wide range in depletion mode. UV‐visible absorption spectroscopy, ultraviolet photoelectron spectroscopy (UPS), and steady‐state photoluminescence (PL) spectroscopy are used to analyze the nanocomposite films. The findings provide a better understanding of light‐induced threshold voltage shifts of P3HT‐based field‐effect transistors and inverters and demonstrate their potential applications in electronic signal modulation for solution‐processed integrated circuits. |
| |
Keywords: | gold nanoparticles photoresponse polymer transistors threshold voltages unipolar inverters |
|