geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Laser patterning of epitaxial graphene for Schottky junction photodetectors


, : Laser patterning of epitaxial graphene for Schottky junction photodetectors. Acs Nano 5(7): 5969-5975

Large-area patterning of epitaxial graphene for Schottky junction photodetectors has been demonstrated with a simple laser irradiation method. In this method, semimetal-semiconductor Schottky junctions are created in a controllable pattern between epitaxial graphene (EG) and laser-modified epitaxial graphene (LEG). The zero-biased EG-LEG-EG photodetector exhibits a nanosecond and wavelength-independent photoresponse in a broad-band spectrum from ultraviolet (200 nm) through visible to infrared light (1064 nm), distinctively different from conventional photon detectors. An efficient external photoresponsivity (or efficiency) of ∼0.1 A·W(-1) is achieved with a biased interdigitated EG-LEG-EG photodetector. The fabrication method presented here opens a viable route to carbon optoelectronics for a fast and highly efficient photoconductive detector.

US$19.90

PMID: 21702443

DOI: 10.1021/nn201757j


Other references

Anonymous, 2012: Wild orangutans stressed by eco-tourists, but not for long, IU study out of north Borneo finds. Wild orangutans that have come into contact with eco-tourists over a period of years show an immediate stress response but no signs of chronic stress, unlike other species in which permanent alterations in stress responses have been documented, ne...

Winchell, J.M.; Thurman, K.A.; Mitchell, S.L.; Thacker, W.Lanier.; Fields, B.S., 2008: Evaluation of three real-time PCR assays for detection of Mycoplasma pneumoniae in an outbreak investigation. We compared the performances of three recently optimized real-time PCR assays derived from distinct genomic regions of Mycoplasma pneumoniae during an outbreak. Comprehensive evaluation established that a newly described toxin gene represents a su...

Smaldone, M.C.; Egleston, B.; Hollingsworth, J.M.; Hollenbeck, B.K.; Miller, D.C.; Morgan, T.M.; Kim, S.P.; Malhotra, A.; Handorf, E.; Wong, Y-Ning.; Uzzo, R.G.; Kutikov, A., 2016: Understanding Treatment Disconnect and Mortality Trends in Renal Cell Carcinoma Using Tumor Registry Data. The paradoxical rise in overall and cancer-specific mortality despite increased detection and treatment of renal cell carcinoma (RCC) is termed "treatment disconnect." We reassess this phenomenon by evaluating impact of missing data and...

Zhu, D-wang.; Yang, X.; Yang, C-zhe.; Ma, J.; Liu, Y.; Yan, M.; Wang, L-zhen.; Li, J.; Zhang, C-ping.; Zhang, Z-yuan.; Zhong, L-ping., 2013: Annexin A1 down-regulation in oral squamous cell carcinoma correlates to pathological differentiation grade. Functional role of Annexin A1 in tumorigenesis is poorly understood. The aim of this study was to investigate the relationship between Annexin A1 protein expression and pathological differentiation grade in biopsy samples from a large cohort of pa...

Ren, X.; Valle-Inclán, F.; Tukaiev, S.; Hackley, S.A., 2017: Changes in the stimulus-preceding negativity and lateralized readiness potential during reinforcement learning. According to reinforcement learning theory, dopamine-dependent anticipatory processes play a critical role in learning from action outcomes such as feedback or reward. To better understand outcome anticipation, we examined variation in slow cortic...

Shvalkovska, L.V., 1970: Breeding and reproduction of local varieties of rhubarb. As a result of ten years of breeding work the varieties Ogre 13 and Tukums 5 were obtained with a yield 26-29% better than that of local varieties. A brief description of their characteristics is given.

Ogilvie, MA., 1987: Movements of tufted duck ringed in Britain: a preliminary report. Wildfowl, 38: 28-36

Cowart, D.; Koneru, B.; Bramer, S.; Noorisa, M.; Kisicki, J., 1997: Effect of gastric pH on the absorption and oral pharmacokinetics of the inotropic agent vesnarinone. Clinical Pharmacology & Therapeutics 61(2): 157

Anonymous, 2013: Herschel-SPIRE-Fourier Transform Spectroscopy of the nearby spiral galaxy IC342. We present observations of the nearby spiral galaxy IC342 with the HerschelSpectral and Photometric Imaging Receiver (SPIRE) Fourier TransformSpectrometer. The spectral range afforded by SPIRE, 196-671 microns, allows usto access a number of 12CO...

Crouse Charles Stevens, 1925: The precious metal content of the black Devonian shales of Kentucky. 21: 49-58 1925