研究方向：

主要从事光电集成技术、模数/数模转换器方向研究，包括高速高精度ADC/DAC、宽电压域专用驱动电路、全硅微显示技术等。

学术成果：

先后承担和参与了GF创新特区项目、新品重点项目、国家ZF预研等项目15项。至今在IEEE EDL、JAP、OM、JSSC、TCAS-I/II等SCI期刊发表论文30余篇，授权中国专利10余项。研究成果成功推广应用到中国电子科技集团公司信息研究院、华为技术有限公司等多家单位。

代表性论文：

1.Kejun Wu, Hongqiao Zhang, Yanxu Chen, Qian Luo and Kaikai Xu, "All-Silicon Microdisplay Using Efficient Hot-Carrier Electroluminescence in Standard 0.18μm CMOS Technology," in IEEE Electron Device Letters, vol. 42, no. 4, pp. 541-544, April 2021, doi: 10.1109/LED.2021.3059781.

2.Kejun Wu, Yanxu Chen, Junji Cheng*, Kaikai Xu, "Use of carrier injection engineering to increase the light intensity of a polycrystalline silicon avalanche mode light-emitting device," in Journal of Applied Physics, vol. 128, no. 17, Nov. 2020, doi: 10.1063/5.0020113.

3.Kejun Wu,Junji Cheng, Guanhua Huang, Jun Yuan, Kaikai Xu,"Poly-silicon light-emitting-device based electro-optical interfaces in standard silicon-CMOS integrated circuitry," Optical Materials, vol. 102, April 2020, doi: 10.1016/j.optmat.2020.109783.

4.Kejun Wu, Jing Li, Xiangzhan Wang, Ning Ning, Kaikai Xu, Qi Yu, "Switching sequence optimization for gradient errors compensation in the current-steering DAC design," Microelectronics Journal, vol. 95, Jan 2020, doi: 2020, 10.1016/j.mejo.2019.104662.

5.Kejun Wu, Jun Zhang, Yuanbo Li, Xiangzhan Wang, Yang Liu, Qi Yu, Tupei Chen, "Design of AM Self-Capacitive Transparent Touch Panel Based on a-IGZO Thin-Film Transistors," in IEEE Access, vol. 8, pp. 76929-76934, 2020, doi: 10.1109/ACCESS.2020.2989435.

6.Kejun Wu, Junming Han, Shuangyi Wu, Yang Liu, Qi Yu, "A Fast Calibration Current Steering DAC with Bypass Window Under 55 nm CMOS Process," Nanoscience and Nanotechnology Letters, vol. 7, no. 4, April 2015, pp. 369-374(6), DOI:https://doi.org/10.1166/nnl.2015.1932.

7.Kejun Wu, Ling Du, Shuangyi Wu, Guang He, Ning Ning, Qi Yu, Yang Liu, "A fast successive approximation calibration technique with bypass window in DACs," 2016 IEEE International Nanoelectronics Conference (INEC), 2016, pp. 1-2, doi: 10.1109/INEC.2016.7589299.

8. Qihui. Zhang, Ning Ning, Zhong Zhang, Jing Li,Kejun Wu, Yong Cheng and Qi Yu, "A 13-Bit ENOB Third-Order Noise-Shaping SAR ADC Employing Hybrid Error Control Structure and LMS-Based Foreground Digital Calibration," in IEEE Journal of Solid-State Circuits, doi: 10.1109/JSSC.2021.3137540.

9. Qihui Zhang, Ning Ning, Jing Li, Qi Yu,Kejun Wuand Zhong Zhang, "A Second-Order Noise-Shaping SAR ADC Using Two Passive Integrators Separated by the Comparator," in IEEE Transactions on Very Large Scale Integration (VLSI) Systems, vol. 29, no. 1, pp. 227-231, Jan. 2021, doi: 10.1109/TVLSI.2020.3033415.

10. Qihui Zhang, Ning Ning, Jing Li, Qi Yu, Zhong Zhang andKejun Wu,"A High Area-Efficiency 14-bit SAR ADC With Hybrid Capacitor DAC for Array Sensors," in IEEE Transactions on Circuits and Systems I: Regular Papers, vol. 67, no. 12, pp. 4396-4408, Dec. 2020, doi: 10.1109/TCSI.2020.2998473.

11. Jian Luo, Jing Li, Ning Ning*,Kejun Wu, Zhen Liu, Yang Liu, Qi Yu,"A Low Voltage and Low Power 10-bit Non-Binary 2b/Cycle Time and Voltage Based SAR ADC," in IEEE Transactions on Circuits and Systems I: Regular Papers, vol. 67, no. 4, pp. 1136-1148, April 2020, doi: 10.1109/TCSI.2019.2949072.

12. Qihui Zhang, Jing Li, Zhong Zhang,Kejun Wu, Ning Ning, Qi Yu, "A Low-Power and Area-Efficient 14-bit SAR ADC with Hybrid CDAC for Array Sensors," 2019 IEEE International Symposium on Circuits and Systems (ISCAS), 2019, pp. 1-5, doi: 10.1109/ISCAS.2019.8702399.

13. Jian Luo, Jing Li, Ning Ning, Kejun Wu, Zhen Liu, Yang Liu, Qi Yu, "A Low Voltage 10-Bit Non-Binary 2B/Cycle Time and Voltage Based SAR ADC," 2019 IEEE International Symposium on Circuits and Systems (ISCAS), 2019, pp. 1-5, doi: 10.1109/ISCAS.2019.8702557.