Kyoto University · 공학
Sagawa 교수의 연구실은 주로 유기 및 나노구조 소재를 활용한 에너지 변환 장치, 특히 태양전지와 광전기 소자에 초점을 맞추고 있습니다. 포르피린, 피렌, 고분자 및 금속 산화물 등 다양한 광흡수체를 포함한 자가조립 나노구조를 설계하고, 그 광물리적 특성과 전자 이동 메커니즘을 정밀하게 제어하는 데 주력하고 있습니다. 특히 1차원 나노구조, ZnO 나노와이어, 양자점, 그리고 도핑을 통한 성능 향상 전략이 핵심 연구 주제입니다. 이들의 연구는 태양광 효율 향상과 고성능 광전소자의 실현 가능성을 높이고 있습니다.
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
Microfibrous self-aggregation of chromophoric groups of porphyrin and/or pyrene substituted by didodecyl l-glutamic acid in organic media is confirmed by transmission electron microscopic (TEM) observation. Chromophoric probes of porphyrin and pyrene moieties enable evaluation of their assembling behavior photophysically through UV−vis, circular dichroism (CD), and fluorescence spectroscopic characterization. This spectroscopic characterization was able to compensate the lack of TEM observation
APC is a safe and effective modality for treatment of early gastric cancer with intramucosal invasion untreatable by surgical resection or EMR. However, further observations are necessary to determine the long term prognosis of patients undergoing this treatment.
Bulk heterojunction solar cells with highly ordered one-dimensional (1D) nanostructured components of semiconducting conjugated polymers, dyes, and metal oxides are reviewed in terms of device structure and performance. The morphologically controlled semiconducting materials show characteristic features of the light-harvesting and photocurrent generation. We highlight the recent progress and improvement of self-assembling 1D materials for a donor−acceptor active layer as well as an electron-tran
The nanorod arrays of ZnO incorporated with lithium atoms show specific crystallinity, photoluminescence and absorption properties, which are promising for the improvement of photovoltaic performance of hybrid solar cells based on ZnO/poly(3-hexylthiophene). Li ions can be incorporated into ZnO crystals during the hydrothermal growth of the nanorods. The presence of Li in ZnO crystal was confirmed through X-ray diffraction analysis and by the photoluminescence spectra obtained. The difference in
Four kinds of silyl(boryl)platinum(II) complexes, 2a−2d, have been prepared by oxidative addition of silylboranes to platinum(0) complexes, in situ generated from Pt(cod)2 and 2 molar quantity of tertiary phosphine ligands (L) in Et2O: cis-Pt(SiMe2Ph)(BX2)L2 (X2 = −OCMe2CMe2O− (pin), L = PMe3 (2a), PMe2Ph (2b), PEt3 (2c); X2 = −NMeCH2CH2NMe− (dmeda), L = PMe3 (2d)). Complexes 2a−2c undergo selective insertion of phenylacetylene into the Pt−B bond at room temperature in CD2Cl2, giving cis-Pt{C(Ph
Lead chalcogenides colloidal quantum dot (PbS CQD) solar cells employing an ordered bulk heterojunction (OBHJ) structure allow sufficient utilization of solar energy and at the same time ensure efficient charge extractions. However, the interfacial deficiency was determined to be a significant limiting factor for the further improvement of efficiency. Herein, a finely interpenetrating OBHJ structure between zinc oxide nanowire (ZnO NW) arrays and PbS CQDs was achieved by simultaneously controlli
Reversible and biphasic switching of monomer-to-R-chiral dimer transition and R-chiral-to-S-chiral dimer transition of cyanine chromophores were demonstrated by complex formation with hyaluronic acid.
