Unusual oxidation-induced core-level shifts at the HfO2/InP interface

Autor: Jaakko Mäkelä, Antti Lahti, Marjukka Tuominen, Muhammad Yasir, Mikhail Kuzmin, Pekka Laukkanen, Kalevi Kokko, Marko P. J. Punkkinen, Hong Dong, Barry Brennan, Robert M. Wallace

Publikováno v: Scientific Reports, Vol 9, Iss 1, Pp 1-14 (2019)

X-ray photoelectron spectroscopy (XPS) is one of the most used methods in a diverse field of materials science and engineering. The elemental core-level binding energies (BE) and core-level shifts (CLS) are determined and interpreted in the XPS. Oxid

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doajarticles::de5db6059af2430952d0996fe146b8ea
http://link.springer.com/article/10.1038/s41598-018-37518-2

Crystalline and oxide phases revealed and formed on InSb(111)B

Autor: Jaakko, Mäkelä, Zahra Sadat, Jahanshah Rad, Juha-Pekka, Lehtiö, Mikhail, Kuzmin, Marko P J, Punkkinen, Pekka, Laukkanen, Kalevi, Kokko

Publikováno v: Scientific Reports, Vol 8, Iss 1, Pp 1-13 (2018)

Oxidation treatment creating a well-ordered crystalline structure has been shown to provide a major improvement for III–V semiconductor/oxide interfaces in electronics. We present this treatment’s effects on InSb(111)B surface and its electronic

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid_dedup__::7409dd7e5ebcf16b9c8cd5c4ff405600
http://link.springer.com/article/10.1038/s41598-018-32723-5

Solar UV index and UV dose determination with photochromic hackmanites: from the assessment of the fundamental properties to the device

Autor: Mika Lastusaari, Antton Curutchet, Pekka Laukkanen, Jari Sinkkonen, Ari Kuusisto, Fikret Mamedov, Petriina Paturi, Isabella Norrbo, Jaakko Mäkelä, Tangui Le Bahers, Tero Laihinen, Erik Wetterskog

Publikováno v: Materials Horizons
Materials Horizons, 2018, 5 (3), pp.569-576. ⟨10.1039/C8MH00308D⟩
Materials Horizons, cRoyal Society of Chemistry, 2018, 5 (3), pp.569-576. ⟨10.1039/C8MH00308D⟩

Extended exposure to sunlight or artificial UV sources is a major cause of serious skin and eye diseases such as cancer. There is thus a great need for convenient materials for the easy monitoring of UV doses. While organic photochromic molecules are

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5fed762cf94126602be6cf2448aea424
https://doi.org/10.1039/c8mh00308d

Local variation in Bi crystal sites of epitaxial GaAsBi studied by photoelectron spectroscopy and first-principles calculations

Autor: Pekka Laukkanen, Jacek Osiecki, A. Lahti, Joonas Hilska, Marko Patrick John Punkkinen, Marjukka Tuominen, Jaakko Mäkelä, Mikhail Kuzmin, Johnny Dahl, Kalevi Kokko, Mircea Guina, Janne Puustinen, Muhammad Yasir, Karina Schulte

Publikováno v: Applied Surface Science. 396:688-694

Epitaxial Bi-containing III–V crystals (III-V1-xBix) have attracted increasing interest due to their potential in infrared applications. Atomic-scale characterization and engineering of bulk-like III-V1-xBix properties (e.g., Bi incorporation and d

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8906fd5398f45a95b4de9b640a66f506
https://doi.org/10.1016/j.apsusc.2016.11.009

Sr/Si(100)(1 × 2) reconstruction as a template for the growth of crystalline high-k films on silicon: Atomic structure and reactivity

Autor: Pekka Laukkanen, Marjukka Tuominen, Jaakko Mäkelä, Johnny Dahl, Mikhail Kuzmin, Marko Patrick John Punkkinen, Kalevi Kokko, Muhammad Yasir

Publikováno v: Surface Science. 646:140-145

Atomic structure of the Sr-adsorbed Si(100)(1 × 2) surface has been investigated by scanning tunneling microscopy (STM) and ab initio calculations. This surface reveals rows of Sr atoms between unbuckled Si dimer rows as well as an abundance of vaca

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::929b09d6bd1fe1f118fed3b31203efa1
https://doi.org/10.1016/j.susc.2015.07.022