Related Experiment Video
Updated: Mar 6, 2026
Fabrication of Flexible Image Sensor Based on Lateral NIPIN Phototransistors
Published on: June 23, 2018
Boosting Fiber-Shaped Photodetectors via "Soft" Interfaces
Zhengfeng Zhu1, Dan Ju1, Yousheng Zou1
1Key Laboratory of Advanced Display Materials and Devices, Ministry of Industry and Information Technology, Institute of Optoelectronics & Nanomaterials, College of Material Science and Engineering, Nanjing University of Science and Technology , Nanjing, 210094 China.
Researchers developed a novel fiber-shaped photodetector using hybrid interfaces to overcome performance degradation in wearable electronics. This design enhances durability and significantly improves photoresponse speed and efficiency.
Area of Science:
- Materials Science
- Nanotechnology
- Wearable Electronics
Background:
- Fiber-shaped devices are crucial for wearable electronics but suffer performance loss due to bending and poor interfaces.
- Developing robust and efficient fiber-based electronic components remains a significant challenge.
Purpose of the Study:
- To propose and demonstrate an effective strategy for improving the performance and durability of fiber-shaped devices.
- To address the challenge of performance degradation in flexible electronics by creating advanced hybrid interfaces.
Main Methods:
- Constructed inorganic-organic-graphene hybrid interfaces on a single fiber-shaped photodetector.
- Grew ZnO nanorod arrays on a Zn wire core, followed by wrapping with PVK and graphene layers.
- Utilized "soft" interfaces to ensure compact contacts between functional layers on curved surfaces.
Main Results:
- Achieved a high light-to-dark current ratio (Ilight/Idark) of 7.2 and photoresponsivity of 0.9 A/W at 0.5 V bias.
- Demonstrated significantly reduced contact resistance due to "soft" hybrid interfaces.
- Exhibited excellent durability under bending and a photoresponse rise time of 280 ms, an order of magnitude faster than conventional devices.
Conclusions:
- The proposed inorganic-organic-graphene hybrid interface strategy effectively enhances the performance and durability of fiber-shaped photodetectors.
- This approach offers a promising solution for creating high-performance, flexible electronic devices for wearable applications.
- The "soft" interface design is key to maintaining device integrity and function under mechanical stress.
