讲题题目：Plentiful Materials for Sustainable Energy Technologies and Medical Diagnosis
Oomman K. Varghese
Nanomaterials and Devices Laboratory, Department of Physics, University of Houston, Texas, USA
Recent concerns over limited resources and environmental damage caused by excess carbon dioxide emission to the atmosphere made the topic of sustainability active again. Sustainability demands prudent use of natural resources. Solid materials, especially organic and inorganic semiconductors, are critical to most of the present day technologies. Replacing rare and expensive materials used in these technologies with plentiful materials is challenging, but highly rewarding. Several of the problems associated with abundant materials can be solved if they take the form of nanoarchitectures. They not only reduces the material usage but also exhibit unique properties. The research at Nanomaterials and Devices Lab is focused on developing nanoarchitectures of abundant functional materials, identifying their potentials and using them for applications, primarily in the fields of solar energy conversion and medical diagnosis or treatment. The presentation will give an overview of our strategies for developing materials for these applications. Recent results pertaining to the development of organic-inorganic hybrid solar cells, solar fuel generation and environmental sensors for early detection of breast cancer will be discussed in detail.