Dear Prof. XX,

I am XXX, a final year undergraduate from XX University, majoring in Electronic Engineering, and now working in Prof. XX's group with my final year project on morphology optimization of organic photovoltaics.

（开门见山自报家门）I have been an exchange student your University last semester, and Iam very passionate with your research focus especially photovoltaics and nanobiosensors.

（和教授拉近关系，或者可以说你在某一次conference上听过他的报告，或者看过他的什么视频、报道之类的）

I have been enjoying research work for more than one year in Prof. XX's group. I can now independently fabricate solar cells with the highest efficiency of 6.3% with good stability. I can also fabricate quantum dot resistive memory devices.Currently, I work independently on morphology optimization of organicphotovoltaics that focuses on deeper understanding of mechanism of organic solarcells. Through all these experiences in nanostructured materials, I think Ihave prepared myself with the required skills in your lab, and I believe thatmy experience might bring some innovative ideas to projects you are conducting.

（点出自己的能力和现在在做的项目，尤其突出教授可能感兴趣的技能）

It is known that you accomplished great findings in computational study of nanomaterials. The fundamental research you are conducting and your interest on XX are really attracting me to work with your group. For me, the most exciting part of research is exploring the fundamental mechanism and method which in return bridges research and application. I really love this field and I believe I can contribute to future research with my fabrication skills, characterization skills, abundant experience in XX research and programming skills.

（表现出自己对教授所做工作的了解和想跟着教授做phd的愿望，让教授觉得你关注他们组很久了）

Thanks a lotfor your attention. Attached is my resume and please contact me if you wouldlike to know more detailed information about me.

Best Regards,

XX