论文部分内容阅读
A high performance heterojunction organic ultraviolet photodetector based on NPB and Bphen has been fabricated.A transparent conducting polymer PEDOT:PSS coated quartz substrate instead of ITO coated glass substrate as anode is propitious to detect shorter wavelength ultraviolet light.As a result,the device shows a low dark current density,a high responsivity of 502 mA/W and a detectivity of 2.67×10 12 cm Hz 1/2 /W which is illuminated by a 220 nm ultraviolet light with an intensity of 1.6 mW/cm 2.Moreover,the performance of the PEDOT:PSS transparent electrode device is better than the semi-transparent Al electrode device electrode because of the higher transmittance and electrode properties.
A high performance heterojunction organic ultraviolet photodetector based on NPB and Bphen has been fabricated. A transparent conducting polymer PEDOT: PSS coated quartz substrate instead of ITO coated glass substrate as anode is propitious to detect shorter wavelength ultraviolet light. As a result, the device shows a low dark current density, a high responsivity of 502 mA / W and a detectivity of 2.67 × 10 12 cm Hz 1/2 / W which is illuminated by a 220 nm ultraviolet light with an intensity of 1.6 mW / cm 2. Moreover, the performance of the PEDOT: PSS transparent electrode device is better than the semi-transparent Al electrode device electrode because of the higher transmittance and electrode properties.