主讲人：范智勇，香港科技大学教授
时 间：2020年6月12日15:00-16：00
地 点：腾讯会议，ID 919 124 499
联系人：廖蕾
讲座摘要：Metal halide perovskite materials are emerging as highly promising materials for high performance optoelectronic devices thus triggered broad attention. Due to incompatibility of metal halide perovskite materials with conventional lithography techniques, it is preferable to achieve nano-perovskite material growth and assembly at the same time for further device applications. In our work, we have developed a chemical vapor deposition (CVD) process to grow ordered three-dimensional (3-D) metal halide nanowire (NW) arrays in nanoengineering templates with. This unique process utilizes metal nanoclusters at the bottom of vertical nanochannels to initiate high quality NW growth. The 3-D NW arrays are conspicuously promising for 3-D integrated nano-electronics/optoelectronics. To further demonstrate the technological potency of the perovskite NW arrays, they have been fabricated into photodetectors, LEDs and proof-of-concept image sensors. In addition, we have also discovered that 3-D NW arrays can be assembly on non-planar substrates when the shape of the template is engineered. This opens up many interesting applications. Particularly, we have built a hemispherical retina with 3-D perovskite NWs are a core component of a proof-of-concept biomimetic eye, using ionic liquid as a common front contact and liquid metal wires as addressable back contact. The device features large field-of-view, faster speed than human eye and reasonable sensitivity. It may find applications in visual prosthesis and humanoid robotics in the future.
主讲人简介：范智勇，香港科技大学电子与计算机工程系教授，博导。香港科大-ATAL联合创新中心主任，香港科大材料表征中心副主任，香港科大能源学院，先进显示与光电子技术国家重点实验室成员，英国皇家化学会会士，IEEE资深会员，香港青年科学院院士。复旦大学本科和硕士，加州大学欧文分校材料科学博士。曾任加州大学伯克利分校电气工程和计算机科学系博士后研究员，劳伦斯伯克利国家实验室博士后研究员。获得多项奖项，包括加州大学BSAC杰出研究报告奖，香港科技大学工院青年研究员奖，杰出研究奖及香港科技大学校长奖及创新奖，山东省自然科学二等奖等。研究兴趣集中在可用于电子及光电器件的纳米材料和结构。迄今在Nature, Nature Materials, Nature Communications, PNAS, Nano Letters, Advanced Materials等期刊发表了170多篇学术论文，引用次数>18,000，H指数68，为2018科睿唯安高引作者。
