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@ARTICLE{Barthel:891724,
author = {Barthel, Armin and Roberts, Joseph and Napari, Mari and
Frentrup, Martin and Huq, Tahmida and Kovács, András and
Oliver, Rachel and Chalker, Paul and Sajavaara, Timo and
Massabuau, Fabien},
title = {{T}i {A}lloyed α-{G}a2{O}3: {R}oute towards {W}ide {B}and
{G}ap {E}ngineering},
journal = {Micromachines},
volume = {11},
number = {12},
issn = {2072-666X},
address = {Basel},
publisher = {MDPI},
reportid = {FZJ-2021-01697},
pages = {1128 -},
year = {2020},
abstract = {The suitability of Ti as a band gap modifier for α-Ga2O3
was investigated, taking advantage of the isostructural α
phases and high band gap difference between Ti2O3 and Ga2O3.
Films of (Ti,Ga)2O3 were synthesized by atomic layer
deposition on sapphire substrates, and characterized to
determine how crystallinity and band gap vary with
composition for this alloy. We report the deposition of high
quality α-(TixGa1−x)2O3 films with x = $3.7\%.$ For
greater compositions the crystalline quality of the films
degrades rapidly, where the corundum phase is maintained in
films up to x = $5.3\%,$ and films containing greater Ti
fractions being amorphous. Over the range of achieved
corundum phase films, that is $0\%$ ≤ x ≤ $5.3\%,$ the
band gap energy varies by ∼270 meV. The ability to
maintain a crystalline phase at low fractions of Ti,
accompanied by a modification in band gap, shows promising
prospects for band gap engineering and the development of
wavelength specific solar-blind photodetectors based on
α-Ga2O3.},
cin = {ER-C-1},
ddc = {620},
cid = {I:(DE-Juel1)ER-C-1-20170209},
pnm = {143 - Controlling Configuration-Based Phenomena (POF3-143)
/ ESTEEM3 - Enabling Science and Technology through European
Electron Microscopy (823717)},
pid = {G:(DE-HGF)POF3-143 / G:(EU-Grant)823717},
typ = {PUB:(DE-HGF)16},
pubmed = {33419277},
UT = {WOS:000602446200001},
doi = {10.3390/mi11121128},
url = {https://juser.fz-juelich.de/record/891724},
}