Kunwu Fu, PhD, is now working in quality engineering in Wieland Metals Singapore. He was a visiting researcher to Professor Michael Gratzel's research group in EPFL in 2014. He received his PhD in 2016 at the School of Materials Science and Engineering, Nanyang Technological University in Singapore after earning his bachelor degree at the same school in the area of organo-halide perovskite materials in mesoscopic solar cells, studying the morphological and electrical properties of methylammonium lead iodide perovskite in the mesoscopic solar cells. His research focused on understanding the varying nanostructures of perovskite materials and its implications to high-efficiency solar cell device. It also extended to exploring novel small molecule organic materials for hole-transporting layer in high-efficiency perovskite solar cells.

Anita Ho-Baillie, PhD, is an Associate Professor at the University of New South Wales (UNSW), Australia. Her research interests in the field of photovoltaics include high-efficiency silicon solar cells, tandem solar cells, perovskite solar cells, integration of photovoltaics for a wide range of applications, and manufacturing cost analysis. She has been leading the perovskite solar cell research group at UNSW since 2013 and in 2016 announced the energy conversion efficiency records for the largest certified monolithic perovskite solar cells. She obtained her PhD at UNSW in 2005.

Hemant Kumar Mulmudi, PhD, is currently working as a research fellow at the Research School of Engineering, Australian National University on perovskite solar cells. His interests span from solution processed material synthesis to integration of these materials in functional solar photovoltaic devices and fuels. He received his PhD from the Nanyang Technological University, Singapore, in 2014.

Pham Thi Thu Trang, PhD, is currently a lecturer at the University of Engineering and Technology, Vietnam National University, Hanoi. Her research focuses on chemical synthesis of nanostructured materials for dye-sensitized solar cells and perovskite solar cells and device fabrication and characterization. She obtained her PhD degree at Nanyang Technological University (Singapore) and completed her postdocs in CNRS, France.

Introduction to Perovskite Solar Cells. Transporting Layers in Perovskite Solar Cells. Hole-Transporting Layers in Perovskite Solar Cells. Lead-Free Perovskite Solar Cells. Tandem Perovskite Solar Cells and Other Aspects.