Au Nanoparticle Light Scattering Enhanced Responsivity in Pentacene Phototransistor for Deep-UV Light Detection

作者：Yuan Shuo Huang; Pei Zingway^*; Lai Hsin Cheng; Chen Chien Hsun; Li Pei Wen; Chan Yi Jen

来源：IEEE Electron Device Letters, 2015, 36(11): 1186-1188.

DOI：10.1109/LED.2015.2479239

• Phototransistor
• gold nanoparticles
• responsivity

In this letter, a pentacene thin-film phototransistor (PTFP) with gold nanoparticles (Au-NPs) decoration in bottom-gate structure was demonstrated. With the Au-NPs, this device is capable of scattering the free-space ultra-violet (UV) irradiation into the pentacene film. Therefore, the PTFP with Au-NPs exhibit 4.5-A/W responsivity with V-GS = 0 V at the wavelength of 240 nm. Meanwhile, an ultimate 32.4-A/W responsivity can be achieved with V-GS = -10 V at the wavelength of 240 nm. Such an excellent spectral response suggests PTFP is capable for used in daily and disposable UV status assessment.

• 出版日期2015-11
• 单位中央民族大学