Kumar, Mahesh and Rajpalke, Mohana K and Roul, Basanta and Bhat, Thirumaleshwara N and Kalghatgi, AT and Krupanidhi, SB (2012) Determination of MBE grown wurtzite GaN/Ge3N4/Ge heterojunctions band offset by X-ray photoelectron spectroscopy. In: Physica Status Solidi B, 249 (1). pp. 58-61.
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Hexagonal Ge3N4 layer was prepared on Ge surface by in situ direct atomic source nitridation and it is promising buffer layer to grow GaN on Ge (111). The valence band offset (VBO) of GaN/Ge3N4/Ge heterojunctions is determined by X-ray photoemission spectroscopy. The valence band (VB) of Ge3N4 is found to be 0.38?+/-?0.04?eV above the GaN valance band and 1.14?+/-?0.04?eV below the Ge. The GaN/Ge3N4 and Ge3N4/Ge are found type-II and type-I heterojunctions, respectively. The exact measurements of the VBO and conduction band offset (CBO) are important for use of GaN/Ge3N4/Ge (111) heterosystems.
|Item Type:||Journal Article|
|Additional Information:||Copyright of this article belongs to John Wiley and Sons.|
|Department/Centre:||Division of Chemical Sciences > Materials Research Centre|
|Date Deposited:||18 May 2012 08:58|
|Last Modified:||18 May 2012 08:58|
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