报告题目：Binary, Doped and Complex Oxides as Transport Layers in Halide Perovskite Solar Cells

时间：2018年10月26日10:00-11:00

地点：武汉光电国家研究中心A302

报告人：Prof. Monica Lira-Cantu

邀请人：韩宏伟教授

报告人简介：

Monica Lira-Cantu obtained a PhD degree in Materials Science at the Materials Science Institute of Barcelona (ICMAB) in Barcelona (Spain, 1997). From 1999 to 2001 she worked as permanent Senior Staff Chemist at ExxonMobil Research & Engineering (formerly Mobil Technology Co) in New Jersey (USA) initiating a laboratory on energy related applications (fuel cells and gas membranes). She returned to Spain in 2002. She is Tenured Research Fellow at the Spanish National Research Council (CSIC, Spain) and group leader of the Nanostructured Materials for Photovoltaic Energy Lab (at ICN2, Spain). She has received different awards/fellowships as a visiting scientist to the following laboratories: University of Oslo, Norway (2003), Riso National Laboratory, Denmark (2004/2005), the Center for Advanced Science and Innovation, Japan (2006) and the Ecole Polytechnique Federal de Lausanne, EPFL Switzerland (2015-2018). She has been the PI of several projects (both national, European and with industry), and she is the principal coordinator of a COST Action Project related to the study of the stability of Organic and perovskite solar cells. Her research interests are the synthesis and application of nanostructured materials for Next-generation Thin Film Solar Cells: Dye Sensitized, Organic, All-oxide and Halide Perovskite Solar Cells.

报告摘要：

We are moving towards a sustainable society powered by renewal energy where solar photovoltaics is one of the most important players. In the past few years, emerging photovoltaic (PV) technologies have observed an exponential increase in power conversion efficiencies (PCE) with halide perovskite solar cells above 22 %, tandem photovoltaics reaching 26 % or dye sensitized solar cells for indoor lighting at the impressive 28.9 % PCE mark. Oxides in solar cells can be found as the main solar absorber responsible for photon-to-electron conversion, as interfacial layers for the transport of electron or holes, as part of the conductive metal electrodes (including transparent electrodes) and also as part of photon management. Among the many advantages is the ease of fabrication, low cost and enhanced stability that provide to the solar cell. Moreover, new-generation of oxides (e.g. doped or undoped, binary, ternary, ferroelectric, etc) are slowly breaking ground providing competitive power conversion efficiencies, enhanced transport properties or improved UV-light stability, among others. In this talk I will present a brief review on the application of binary metal oxides (binary, doped, nanostructured) and complex oxide compounds (ternary, ferroelectric, etc.) as transport layers in Halide Perovskite Solar Cells. We will discuss their effect on solar cell efficiency and long-term stability of solar cell devices. I will also discuss some initial results on the defect passivation of halide and oxide defects in order to enhance device lifetime.

[1] A. Hagfeldt, M. Lira-Cantu, Recent concepts and future opportunities for oxides in solar cells, Applied Surface Science, (2018) Submitted.

[2] A. Perez-Tomas, A. Mingorance, Y. Reyna, M. Lira-Cantu, Metal Oxides in Photovoltaics: All-Oxide, Ferroic, and Perovskite Solar Cells, in: M. Lira-Cantu (Ed.) The Future of Semiconductor Oxides in Next Generation Solar Cells, Elsevier, 2017, pp. 566.

[3] M. Lira-Cantú, Perovskite solar cells: Stability lies at interfaces, Nature Energy, 2 (2017) nenergy2017115.

[4] M. Lira-Cantu, The future of semiconductor oxides in next generation solar cells, 1st ed., Elsevier, 2017.

[5] Y. Reyna, M. Salado, S. Kazim, A. Pérez-Tomas, S. Ahmad, M. Lira-Cantu, Performance and Stability of Mixed FAPbI3(0.85)MAPbBr3(0.15) Halide Perovskite Solar Cells Under Outdoor Conditions and the Effect of Low Light Irradiation., Nano Energy, 30 (2016) 570–579.