Presenter：Prof. Shujuan Huang (School of Photovoltaic and Renewable Energy Engineering, University of New South Wales (UNSW Sydney))
Topic：Towards High Efficiency and Low-cost Photovoltaic Devices - Perovskites and Quantum Dots
Time：10:00 AM, May 22nd (Tuesday)
Location：909-B
Abstract:
The past few years have seen the uniquely rapid development of solution-processed photovoltaic devices, including lead halide perovskite and colloidal quantum dot solar cells, with a record efficiency at 22.7% and 13.4%, respectively. This talk will review our recent work on both areas. For perovskite, our focuses are in the advancement of understanding of the degradation mechanisms; improvement of both stability and efficiency; development of scaling up processes; as well as development of tandem technology on Si. For the colloidal quantum dot work, I will present the development of a novel ion exchange process for surface passivation leading to the highest reported efficiency of PbSe solar cells. Other work on optimization of carrier transport layers for PbS quantum dot devices will also be presented.
Biography:
• Dr Shujuan Huang is a senior research fellow and Chief Investigator in the Australian Centre of Advanced Photovoltaics and School of Photovoltaic and Renewable Energy Engineering at UNSW Sydney. Her research has been focused on developing nanomaterials for future generation low-cost and high-efficiency photovoltaics, with particular expertise in solution-based processes/fabrication and advanced characterization of semiconductor thin film solar cells, including:
established and leads colloidal quantum dot (QD) solar cells group, reported the world highest efficiency of PbSe QD solar cells;
established the perovskite cell project together with Prof Martin Green, including setting up experimental capabilities within SPREE for perovskite research and developing various advanced characterization approaches.
• Dr Huang has been successful as a Chief Investigator in securing numerous competitive grants ($14.6M in total) and achieved research outcomes of high quality and high international impact with over 140 peer-reviewed publications.
• Dr Huang has supervised 36 PhD students with 28 completions.
• Dr is a grant assessor for Australian Research Council and other international funding bodies.
• Selected Publications:
“Mixed 3D-2D passivation treatment for mixed-cation lead mixed-halide perovskite solar cells for higher efficiency and better stability”, Advanced Energy Materials, aenm.201703392 (2018).
“Achieving high-performance PbS quantum dot solar cells by improving hole extraction through Ag doping”, Nano Energy, 46, 212 (2018).
“A New Passivation Route Leading to over 8% Efficient PbSe Quantum Dot Solar Cells via Direct Ion Exchange with Perovskite Nanocrystals, Advanced Materials, 27, 1703214 (2017).
“Acoustic-Optical Phonon Up-conversion and Hot-Phonon Bottleneck in Lead-Halide Perovskites”, Nature Communications, 8, 14120 (2017).
“Significant Improvement in the Performance of PbSe Quantum Dot Solar Cell by Introducing a CsPbBr3 Perovskite Nanocrystal Back Layer”, Advanced Energy Materials, 7, 1601773 (2017).
“Critical Role of Grain Boundaries for Ion Migration in Formamidinium and Methylammonium Lead Halide Perovskite Solar Cells”, Advanced Energy Materials 6, 1600330 (2016).
Contact: Prof. Wanli Ma
Editor: Juan Yang