Connecting three atomic layers puts semiconducting science on its edge -- ScienceDaily

Connecting three atomic layers puts semiconducting science on its edge -- ScienceDaily

Layered materials at the atomic limit, where electrons are constrained to two dimensions, can be engineered into electronic structures with unique optical, electronic, and magnetic properties. The new structures are a test bed for theories of low dimensional materials physics, but more practically, the optical manipulation of electron charge and magnetic order can lead to new modes of solar energy conversion and flexible, transparent computation devices.

A new ultra-thin semiconducting material consists of three atomic layers in an "atomic sandwich" configuration with a heavy metal atom layer between two selenium layers. The material is quasi-two dimensional, just three atoms thick, and exhibits unique properties at junctions. When the material is exposed to light and absorbs photons, excited electrons are created which remain coherently coupled, in unique ways, with the charge "hole" they left behind. Stacking up two "atomic sandwiches" yields coupled excited charge states across the planar interface with the magnetic direction or "spin state" becoming aligned for a large population of electrons.

A companion result by the same research group demonstrated a method to make the edge of one metal layer match up with the edge of a second, different metal layer -- a linear boundary or "hetero-junction" rather than the more typical planar boundary. Engineered electron spin and charge polarization, as well as transport across or along the interface, might be possible as evidenced by the enhanced photoluminescence signals at these positions.

Primary support by the DOE Office of Science, Basic Energy Sciences. Some students were supported by graduate student fellowships and doctoral training grants (NSF, EPSRC, HEFCE, and Cottrell Scholar Award). Some researchers were supported by the Hong Kong Research Grant Council, the Croucher Foundation, the Science City Research Alliance and the University of Washington Clean Energy Institute.

Welcome to SUV System Ltd!

SUV System Ltd is ISO 90012008 Certified electronics distributor with 10 years of experiences.

We have built up long term business relationship with about many companies which are stockers and authorized agents. we have a steady and reliable supply to meet customer's demands to the greatest extent .Confidently, we are able to lower your cost and support your business with our years of professional service.

SUV System Ltd is Electronic Components Distributor Supplies,Find Quality Electronic Components Supplies Products IC(Integrated Circuits),Connectors,Capacitor,Resistors,Diodes,Transistors,LED at Suvsystem.com. Sourcing Other Energy, Environment, Excess Inventory Products from Manufacturers and Suppliers at Suvsystem.com

Electronic Components distributor:http://www.suvsystem.com

Connectors Distributor:http://www.suvsystem.com/l/Connectors-1.html

IC Distributor:http://www.suvsystem.com/l/IC(Integrated-Circuits)-1.html

LED Distributor:http://www.suvsystem.com/l/LED-1.html

Capacitor Distributor:http://www.suvsystem.com/l/Capacitor-1.html

Transistor Distributor:http://www.suvsystem.com/l/Transistors-1.html

Resistor Distributor:http://www.suvsystem.com/l/Resistors-1.html

Diode Distributor:http://www.suvsystem.com/l/Diodes-1.html

SUV System Ltd insists on the managing faith ofsincereness,speciality,foresight, win-win,so we build up stable-relationship customers located all over the world, including the States, Europe, Argentina, UAE, Malaysia, Australia,and India etc

we are focus on the following fields,and hope we can help you.

AVX Resistors Resistors TOSHIBA Diodes Switching Diodes ROHM Resistors Vishay resistors NXP Transistors Ligitek LED Chip Inductors ELPIDA IC High Precision Resistors Diodes Inc Texas Instruments(TI) IC Microchip IC Renesas parts IC MURATA IC NXP Diodes Resistor Arrays Fast Recovery Diodes MAXIM IC Bipolar Transistors NEC Transistors TOSHIBA Transistors Transistors Thin Film Resistors Chip Fuses AD IC INTERSIL IC ALTERA IC components Electronic News Zener Diodes FAIRCHILD diodes Freescale Semiconductor TI IC Cypress IC YAGEO Resistors Kingbrigt LED LED part Military IC
http://www.suvsystem.com/a/43475.aspx