Er-Chien Wang Email & Phone Number

Sydney, New South Wales, Australia

Canberra, Australian Capital Territory, Australia

Key responsibilities:• High efficiency poly-Si contact silicon solar cell design and fabrication.• Poly-Si contact solar cell rear surface optical structure behaviour and performance study.Key achievements:• Assisting international industry partner in improving their solar cell efficiency by creating electrical and optical models hence electrical and optical loss-analysis charts to reflect their cell performances. World record solar cell efficiency achieved in 2020. • In charge of purchasing a custom-built physical vapour deposition cluster tool.

Berlin Area, Germany

Key responsibilities: • Conducting European R&D collaboration project with multiple European industry partners and research institutes working on large area heterojunction solar cell and fundamental material study. Specifically, heterojunction carrier selectivity and contact formation, transparent conductive oxide (TCO) optical and electrical properties optimisation and contactivity to screen-printable metal paste. Key achievements:• Research project financially supported by the German Ministry of Economic Affairs and Energy (BMWi).• Achieved PVcomB small area heterojunction silicon solar cell efficiency institute record to 23.7%, large area heterojunction silicon solar cell efficiency institute record to 23.2%. • Successful project execution with detailed reporting and documentation and all milestones completed before deadline.• Significant results from semiconductor junction/contact study, TCO optical and electrical properties study, device series resistance calculation and equivalent electronic circuit design.

Singapore

Key responsibilities: • Conducting R&D collaboration project with international industry partner (Jinko Solar) on large area bifacial solar cell adopting industrially feasible fabrication procedures and equipment. The areas of focus are: alternative p-n junction formation schemes, high quality passivation method and advanced semiconductor and metal contact formation. Key achievements:• Project manager of a >1 million SGD, R&D collaboration project between SERIS and an international industry partner (Jinko Solar) to obtain a high efficiency, production line ready large area bifacial silicon solar cell design.• Successful project execution with detailed reporting and documentation and all milestones completed before deadline with new milestones created for further improvement. • Achieved SERIS 6” n-type bifacial silicon solar cell baseline institute record from sub 20% to 21.44%. • Successfully transfer knowledge developed by the research team to industry pilot line. • Managing a research team to achieve both internal and external milestones.• Successfully developed a few laser applications, such as ablation, recrystallising, lithography.• Developed alternative industrially feasible semiconductor p-n junction formation schemes, high quality passivation method and advanced semiconductor and metal junction formation.

Canberra, Australia

Key responsibilities:• Conducting research on interdigitated back contact silicon solar cells. One of the two main work focuses was on eliminating high temperature process steps in the cell fabrication procedures. This has been achieved by adopting ion implantation and laser doping instead of the traditional thermal doping method. The other focus was on optimising cell characteristics on both electrical and optical performances along with fabrication procedure tuning to achieve very high cell efficiency.Key achievements:• The research team achieved 24.7% efficiency for thermally doped IBC cell (centre record), 23.9% for fully ion implanted IBC cell (near world record at the time best to our knowledge), 23.5% efficiency for laser contact opening cell and 22.8% for fully laser doped IBC cell. • Design and fabricate monocrystalline silicon based solar cells, specifically interdigitated back contact (IBC) solar cell and passivated emitter with rear locally diffused (PERL) solar cell.• Cross-team collaboration with ANU Perovskite team has achieved a theoretical Perovskite-Silicon Tandem structure solar cell efficiency of 26.4%.• Successfully optimised Interdigitated Back-Contact (IBC) solar cell performance and fabrication procedures on the aspects of both performance and fabrication cost.

Doctor Of Philosophy (Ph.D.), Solar Engineering

Activities and Societies: 2010: Secretary of Taiwanese Students' Association (TSA) 2009: General committee of Taiwanese Students'.

Bachelor Of Engineering (B.Eng.), Electrical And Electronics Engineering, With Honours

Activities and Societies: 2007: IEEE University of Canterbury branch committee member