http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Sanchez Barea Joel,Kang Dong‐Ku 대한화학회 2021 Bulletin of the Korean Chemical Society Vol.42 No.6
Identification and monitoring cancer-related genetic mutation become a powerful tool for targeted therapy in recent decades and KRAS is one of the most frequently mutated oncogenes in many types of cancers. Polymerase chain reaction (PCR) is one of the most powerful diagnostic tools and it is widely used for monitoring infectious diseases and tumor-related mutations. However, there are still limitations for monitoring rare mutations in complex biological samples and also for monitoring various mutations in a multiplexed manner from a single set assay. In this study, we present an integration of surface-enhanced Raman scattering (SERS) with PCR that can be used for monitoring KRAS G12D mutation and also can distinguish from similar mutations such as KRAS G13D, G12S, and G12V. With this approach, various KRAS mutations can be detected from a single set of experiment without complex procedures or microdevices.
EFFECT OF THE CHROMOPHORES STRUCTURES ON THE PERFORMANCE OF SOLID-STATE DYE SENSITIZED SOLAR CELLS
HAINING TIAN,Eva M. Barea,ANDREA SOTO,BO XU,LICHENG SUN,ANDERS HAGFELDT,FRANCISCO FABREGAT-SANTIAGO,IVAN MORA-SERO,강용수,Juan Bisquert 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2014 NANO Vol.9 No.5
The efect of metal-free chromophores on dye-sensitized solar cell performance is investigated. Solid state dye-sensitized solar cells (ssDSCs) using diferent molecular sensitizers based on tri-phenylamine (TPA) with thiophene linkers and diferent alkyl chain in the donor unit have beencharacterized using impedance spectroscopy (IS). We show that diferent molecular structuresplay a fundamental role on solar cell performance, by the efect produced on TiO 2 conductionband position and in the recombination rate. Dye structure and its electronic properties are themain factors that control the recombination, the capacitance and the e±ciency of the cells. Aclear trend between the performance of the cell and the optimization level of the blocking efect of the dye structure has been identi¯ed in the solid state solar cells with Spiro-OMeTAD holeconductor.
Kim, Tea-Yon,Song, Donghoon,Barea, Eva M.,Lee, Jung Hyun,Kim, Young Rae,Cho, Woohyung,Lee, Sungjin,Rahman, Mohammed M.,Bisquert, Juan,Kang, Yong Soo unknown 2016 Nano energy Vol.28 No.-
<P><B>Abstract</B></P> <P>Herein, the energy level alignment and electron recombination kinetics in solid state dye-sensitized solar cells (DSCs) employing a solid polymer electrolyte (SPE) have been quantitatively characterized. In order to determine the microscopic origin of the enhanced characteristics in polymer electrolytes, we carried out an extensive study of the photovoltaic properties with respect to the electrolyte type and composition, including a liquid electrolyte (LE) and various salt types and concentrations. We observed a smaller downward shift in the conduction band energy of the TiO<SUB>2</SUB> layer upon contact with the SPE as well as a retarded electron recombination rate. These led to an increase in the <I>V</I> <SUB>oc</SUB> for DSCs with an SPE, which is mostly attributable to the coordinative interactions of the ethylene oxide (EO) units in poly(ethylene oxide) (PEO) and poly(ethylene glycol) dimethyl ether (PEGDME) with metallic Li<SUP>+</SUP> ions and Ti atoms. Such coordinative interactions induce 1) the capture of Li<SUP>+</SUP> cations in the bulk of the polymer electrolyte, thereby reducing their effective concentration and 2) the facile formation of a PEO passivation layer on top of the TiO<SUB>2</SUB> layer. Therefore, it was concluded that the high <I>V</I> <SUB>oc</SUB> in solid state DSCs employing a polymer electrolyte is attributable to the coordinative properties of the EO units in PEO and PEGDME in the SPE.</P> <P><B>Highlights</B></P> <P> <UL> <LI> The origin of high open-circuit voltage in solid state dye-sensitized solar cells with PEO-based polymer electrolyte has been firstly unveiled. </LI> <LI> New quantitative analysis of TiO<SUB>2</SUB> conduction band shift was introduced by measuring the change in the Fermi voltage with varying the concentration of the salts. </LI> <LI> PEO containing the EO groups captured cations in electrolyte and also coordinatively adsorbed on the surface of the TiO<SUB>2</SUB> layer. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
Perimeter leakage current in polymer light emitting diodes
Germà Garcia-Belmonte,José M. Montero,Yassid Ayyad-Limonge,Eva M. Barea,Juan Bisquert,Henk J. Bolink 한국물리학회 2009 Current Applied Physics Vol.9 No.3
Observation of leakage current paths through the device perimeter in standard poly(phenylene vinylene)-based light-emitting devices is reported. Perimeter leakage currents govern the diode performance in reverse and low positive bias and exhibit an ohmic character. Current density correlates with the perimeter-to-area ratio thus indicating that leakage currents are mainly confined on polymer regions in the vicinity of metallic contact limits (device perimeter). Observation of leakage current paths through the device perimeter in standard poly(phenylene vinylene)-based light-emitting devices is reported. Perimeter leakage currents govern the diode performance in reverse and low positive bias and exhibit an ohmic character. Current density correlates with the perimeter-to-area ratio thus indicating that leakage currents are mainly confined on polymer regions in the vicinity of metallic contact limits (device perimeter).