http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : S. Ravi P. Silva (검색결과 3 건)
- 무료
- 기관 내 무료
- 유료
-
Highly conductive and dispersible graphene and its application in P3HT-based solar cells
Mahmoudi, Tahmineh,Rho, Won-Yeop,Yang, Hwa-Young,Silva, S. Ravi P.,Hahn, Yoon-Bong The Royal Society of Chemistry 2014 Chemical communications Vol.50 No.63
<P>A simple reduction method without the need for high-temperature annealing is proposed for highly conductive and dispersible graphene sheets. This method consists of the grafting of graphene oxide (GO) with 1-pyrenecarboxylic acid (PCA) and the exothermic reduction of the PCA-grafted GO, followed by an endothermic decarboxylation with refluxing hot water. The PCA-grafted reduced graphene oxide (PCA-rGO) has a high conductivity of ∼1.52 × 10<SUP>5</SUP> S m<SUP>−1</SUP>. Upon incorporating the rGO-PCA in active and electron transport layers of organic solar cells, compared to P3HT-only devices (0.18%) a 16-fold increase in the power conversion efficiency (2.85%) is obtained, attributed to a substantial increase in the short-circuit current density from 0.017 to 12.09 mA cm<SUP>−2</SUP>.</P> <P>Graphic Abstract</P><P>Structure of an inverted solar cell with the P3HT–PCA-rGO hybrid in the active layer and graphene oxide as the hole transport layer. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c4cc03692a'> </P>
-
CRISTINA E. GIUSCA,YANN TISON,S. RAVI P. SILVA 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2008 NANO Vol.3 No.2
Scanning Tunneling Microscopy and Spectroscopy have been used in an attempt to elucidate the electronic structure of nanotube systems containing two constituent shells. Evidence for modified electronic structure due to the inter-layer interaction in double-walled carbon nanotubes is provided by the experimental tunneling spectra and the contribution of the inner tube to the local density of states of the "composite" double-walled system is identified in agreement with previous theoretical calculations. An explicit correlation between the chirality of the two constituent tubes, the inter-wall interaction and the overall electronic structure for double-walled carbon nanotubes, is demonstrated by our experiments, showing that the effect the inner tube has on the overall electronic structure of double-walled nanotubes cannot be neglected, and is key to the opto-electronic properties of the system. We postulate that previous analysis of the opto-electronic properties on multiple-walled carbonnanotubes based purely on the outer layer chirality of the tube needs significant modification based on new understanding brought forth with our analysis.
-
H. Altuntas,K. Snashall,F. Oke-Altuntas,I. Jayawerdane,M. O. Tas,S. Ravi P. Silva 대한금속·재료학회 2023 ELECTRONIC MATERIALS LETTERS Vol.19 No.5
Carbon nanotube fi eld-eff ect transistor (CNT-FET) based sensor devices are widely used in sensing applications of biomolecules in high sensitivity. In addition, covalent functionalization process can increase the interaction between the CNTs and biological molecules. In this article, we present the eff ect of boronic acid functionalization on the electrical properties of the CNT-FET due to boronic acid and its derivatives have been widely used for the glucose recognition. For this purpose, CNT-FET transistors were fabricated on SiO 2 /Si substrates utilising high purity semiconducting nanotubes as the channel layer and functionalized with pyrene-1-boronic acid. It was found that boronic acid functionalization causes a variation in electrical parameters of CNT-FET transistors such as conductance, transconductance, threshold voltage, fi eld eff ect mobility, resistance, hysteresis gap, and charge transfer of carriers per unit length. The results show that pyrene-1- boronic acid treatment was observed to have a signifi cant benefi cial eff ect on the electrical properties of the CNT-FET and pyrene-1-boronic acid functionalized CNT-FET sensor devices may have great potential for glucose sensing applications.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
