Dr. Md. SHAHIDUZZAMAN

Nanomaterials Research Institute, Kanazawa University, Japan.

In the design of electron transport layers to enhance the performance of perovskite solar cells (PSCs), efficient electron extraction and transport are important aspects. We design and fabricate low-temperature (<180 °C)-processed brookite based TiO2 nanoparticles and incorporate it as a bridge material between perovskite and TiO2 compact layer (CL). The resultant PSCs showed highly reproducible power conversion efficiencies (PCEs) up to ~ 18.2% (vs. ~15%) with stable performance of 18% under continuous light illumination (1 Sun) at maximum power point tracking (MPPT) in contrast to only TiO2 CL based planar devices.

And, herein, we also demonstrate a novel method to promote the intercalation control of inorganic cesium lead iodide (CsPbI3) perovskite films via alternate vacuum-deposition (layer-by-layer). A PCE of 6.79% was obtained via two double layers alternating vacuum-deposition with a Jsc of 12.06 mA/cm2, Voc of 0.79 V, and FF of 0.72. Our results suggest a route for inorganic precursors to be used for efficient PSCs via alternating vacuum deposition.

Dr. Md. SHAHIDUZZAMAN : Assistant Professor at the Nanomaterials Research Institute (NanoMaRi), Kanazawa University where he designs, fabricates and develops highly efficient and stable perovskite solar cells (PSCs) for next-generation solar cells. Born in Bangladesh in 1984, Dr. Shahiduzzaman moved to Japan for postgraduate study in 2011. He obtained a Master degree in Thermoelectric Materials & Application from Japan Advanced Institute Science & Technology (JAIST) in 2013 and did his Ph.D. on PSCs from Kanazawa University in 2016. He was a post-doctoral fellow in Professor Tetsuya Taima's group at Kanazawa University. During his tenure (10/2016 until 09/2017) at Kanazawa University, he extensively worked on the improvement of PSCs performance. Then he did another post-doctoral (10/2017 until 10/2018) at Tokai University, Japan under Tokai University General Research Organization fellowship where he worked on the design and fabricate low-temperature (<180°C)-processed brookite based-TiO2 junctions and test their performance in PSCs. His research interests include integrating micro- and nanotechnology to develop innovative methods to solve energy generation problems. He is also interested in design, fabrication and development of high-efficiency, stable, green and flexible solar cells for various energy applications. He published 1 patent and 26 peer-reviewed articles until the date.