PI has worked in the field of III–V compound materials by MOCVD as an Associate Researcher with Telecommunication Laboratories, Chunghwa Telecom Co. Ltd., Taoyuan, Taiwan. She is currently Distinguished Professor with the Institute of Electronics, National Chiao Tung University. She has authored or coauthored over 200 technical papers and holds over 100 patents in her fields of expertise. Her main interests are solid-state lighting devices, III–V solar cells, optoelectronic devices, high power devices, nano-surface treatment by natural lithography, power device and gas sensors. In 2000, she vitalized her research on high-brightness LEDs with mirror substrate into practical mass products that enable high-power LEDs.
Dr. Horng received numerous awards recognizing her work on high-brightness LEDs. She has been awarded by the Ministry of Education of Taiwan for Industry/ University Corporation Project in 2002, by the Ministry of Science & Technology of Taiwan for the excellent technology transfer of high-power LEDs in 2006, 2008,2009, 2010 and 2011 by Chi Mei Optoelectronics for the first prize of Chi Mei Award in 2008, by the 2007 IEEE Region 10 Academia-Industry Partnership Award and distinguish research award of National Science Council of Taiwan in 2013 and 2021. She became the Fellow of the Australian Institute of Energy since 2012, Fellow of the Institution of Engineering and Technology since 2013, Fellow of SPIE since 2014, Fellow of IEEE since 2015, Fellow of OSA since 2016 and IoP since 2019.

Institute of Electronics, Advanced Semiconductor Technologies and Devices Lab