The University of Osaka · 공학
이 교수의 연구실은 비풀러렌 수용체를 활용한 유기 태양전지의 효율 향상을 위해 분자 구조의 정밀한 설계와 표면 및 인터페이스 특성 조절을 핵심으로 연구를 진행하고 있습니다. 특히, 전자 수용체의 π-공명 구조, 분자 배치, 격자 구조 및 분산력 상호작용이 광전기 성능에 미치는 영향을 실험과 이론적 분석을 통해 규명하고 있습니다. 또한, 흥미로운 분자 기하학적 구조(예: 별형, S자형)를 도입하여 비극성 상호작용과 집합체 형성의 영향을 조절함으로써, 흥미로운 전자적 특성을 확보하고 있습니다.
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
In organic photovoltaics (OPVs) using nonfullerene acceptors, the fine-tuning of interfaces between donor and acceptor in the bulk-heterojunction (BHJ) structure has become an important factor to improve the performance. A series of electron-accepting π-conjugated compounds based on benzothiadiazole and arenedicarboximides were systematically synthesized to investigate the impact of structural modification on molecular orientation at donor–acceptor interfaces. X-ray diffraction and surface free
We revealed the relationship between the London dispersion components of three-dimensional non-fullerene acceptors and photocurrent generation efficiency in bulk-heterojunction-type organic photovoltaics.
Non-fused electron-accepting π-conjugated compounds have been investigated recently for application to nonfullerene acceptors (NFAs) in organic solar cells (OSCs).
Exciton binding energy (E<sub>b</sub>) is understood as the energy required to dissociate an exciton in free-charge carriers, and is known to be an important parameter in determining the performance of organic opto-electronic devices. However, the development of a molecular design to achieve a small level of E<sub>b</sub> in the solid state continues to lag behind. Here, to investigate the relationship between aggregation and E<sub>b</sub>, star-shaped π-conjugated compounds DBC-RD and TPE-RD we
Abstract The development of nonfullerene acceptors (NFAs), represented by ITIC , has contributed to improving the power conversion efficiency (PCE) of organic solar cells (OSCs). Although tuning the electronic structures to reduce the exciton binding energy ( E b ) is considered to promote photocharge generation, a rational molecular design for NFAs has not been established. In this study, we designed and developed two ITIC ‐based NFAs bearing spiro‐substituted bithiophene or biphenyl units (nam
Fine-tuning physical properties by structural modification is important for developing organic semiconducting materials. In this work, we designed and synthesized new electron-accepting compounds containing naphtho[1,2-c:7,8-c']bis([1,2,5]thiadiazole (vNTz) or naphtho[1,2-c:5,6-c']bis[1,2,5]thiadiazole (NTz) groups as electron-accepting units; these units are structural isomers. The vNTz-based compounds have an arch-shaped molecular backbone with C2v symmetry, whereas the NTz-based compound form
Abstract The development of nonfullerene acceptors (NFAs), represented by ITIC , has contributed to improving the power conversion efficiency (PCE) of organic solar cells (OSCs). Although tuning the electronic structures to reduce the exciton binding energy ( E b ) is considered to promote photocharge generation, a rational molecular design for NFAs has not been established. In this study, we designed and developed two ITIC ‐based NFAs bearing spiro‐substituted bithiophene or biphenyl units (nam
Organic solar cells (OSCs) have been anticipated as a promising renewable energy source. In particular, green-light wavelength-selective (GLWS) OSCs have the potential to convert green light into electricity while allowing blue and red light to support crop growth, making them suitable for greenhouse integration. To realize GLWS OSCs, P3HT has been selected as a suitable GLWS donor. However, compatible GLWS nonfullerene acceptors (NFAs) compatible for P3HT remain limited. Here, we designed and s
The Photopolymer Science and Technology Award No. 222100, the Best Paper Award 2021, was presented to Seihou Jinnai and Yutaka Ie (The Institute of Scientific and Industrial Research (SANKEN), Osaka University) for their outstanding contribution published in Journal of Photopolymer Science and Technology, 34, (2021) 285-290, entitled “Synthesis, Properties, and Photovoltaic Characteristics of Arch- and S-shaped Naphthobisthiadiazole-based Acceptors”.
