講者：李榮和教授
演講題目：Organic Semiconductor Materials for Electro-optical Applications
演講時間：5/19（五）15:30~17:20
演講地點：博雅館 201
主持人：蔡偉博教授
李榮和教授
簡要經歷:
國立中興大學 教授 (2014~ Now)
國立中興大學 副教授 (2010~ 2014)
國立雲林科技大學 副教授 (2008~2010)
國立雲林科技大學 助理教授 (2004~2008)
工業技術研究院光電所 工程師 (1999~2003)
榮譽:
- 獲得98年度國科會吳大猷先生紀念獎。
- 獲得國立中興大學100年度傑出青年彈性新資獎勵。
研究領域:
光電高分子材料合成與元件製程技術、有機電激發光顯示器、高分子太陽能電池、染料敏化太陽能電池、鈣鈦礦太陽能電池、超級電容器。
Organic Semiconductor Materials for Electro-optical Applications
Rong-Ho Lee (李榮和)
Department of Chemical Engineering, National Chung Hsing University, Taichung, Taiwan
Email: rhl@nchu.edu.tw
Organic semiconducting materials, including small molecules and conjugated polymers have been widely developed for applications in electroluminescence devices, polymer solar cells, dye sensitized solar cells, and second-order nonlinear optics. For light-emitting display, pure blue emission is very difficult to achieve because a larger energy band gap is required as compared to green or red light-emitting materials. The development of high performance blue-light-emitting materials is a critical issue for full color displays. We have developed a series of novel carbazole-substituted anthracene derivatives based non-doped blue light-emitting devices with high brightness and efficiency. In addition, interest in organic solar cells has been increased at a considerable pace due the promising potential of producing low cost solar electricity with light weight devices and low environmental impact technologies. As a result, bulk heterojunction solar cells based on low-band gap conjugated polymers have received much attention because of their great potential for the development of solution processable, highly flexible, large-area, low cost, and light-weight solar modules. We have synthesized a series of novel polythiophene derivatives functionalized with conjugated side-chain pendants comprising triphenylamine/carbazole moieties for photovoltaic (PV) cell applications. Apart from that, dye-sensitized solar cells (DSSCs) attract much attention because of their low cost, flexibility, and relatively efficient PV conversion of solar energy. We have prepared a series of graphene oxide nanosheet-polyaniline (GOS-PANI) nanohybrid/poly(ethylene oxide) (PEO) blend gel electrolytes for DSSC. These GOS-PANI nanohybrids have been utilized as the extended electron transfer materials and catalyst for the electrochemical reduction of I3. Due to the enhancement of the ionic conductivity and electrochemical catalytic activity of the gel electrolyte, better PV performance has been achieved for the DSSCs based on the GOS-PANI containing electrolytes as compared to the pristine PEO electrolyte-based DSSC sample.