Identification of substitutional Li in -type ZnO and its role as an acceptor

KM Johansen, A Zubiaga, I Makkonen, F Tuomisto… - Physical Review B …, 2011 - APS
Monocrystalline n-type zinc oxide (ZnO) samples prepared by different techniques and
containing various amounts of lithium (Li) have been studied by positron annihilation …

Aluminum migration and intrinsic defect interaction in single-crystal zinc oxide

KM Johansen, L Vines, TS Bjørheim, R Schifano… - Physical Review …, 2015 - APS
Vacancy-mediated migration of Al in single-crystal zinc oxide (ZnO) is investigated using
secondary-ion mass spectrometry (SIMS) combined with hybrid density-functional theory …

Intrinsic point-defect balance in self-ion-implanted ZnO

PT Neuvonen, L Vines, BG Svensson, AY Kuznetsov - Physical Review Letters, 2013 - APS
The role of excess intrinsic atoms for residual point defect balance has been discriminated
by implanting Zn or O ions into Li-containing ZnO and monitoring Li redistribution and …

Defect evolution and impurity migration in Na-implanted ZnO

PT Neuvonen, L Vines, V Venkatachalapathy… - Physical Review B …, 2011 - APS
Secondary ion mass spectrometry (SIMS) and positron annihilation spectroscopy (PAS)
have been applied to study impurity migration and open volume defect evolution in Na+ …

Role of intrinsic and extrinsic defects in H implanted hydrothermally grown ZnO

R Schifano, R Jakiela, A Galeckas, K Kopalko… - Journal of Applied …, 2019 - pubs.aip.org
The impact of hydrogen in ZnO is revealed by combining reaction dynamics calculations
with temperature dependent Hall (TDH), photoluminescence, and secondary ion mass …

H passivation of Li on Zn-site in ZnO: Positron annihilation spectroscopy and secondary ion mass spectrometry

KM Johansen, A Zubiaga, F Tuomisto… - Physical Review B …, 2011 - APS
The interaction of hydrogen (H) with lithium (Li) and zinc vacancies (V Zn) in hydrothermally
grown n-type zinc oxide (ZnO) has been investigated by positron annihilation spectroscopy …

Formation of Zn-and O-vacancy clusters in ZnO through deuterium annealing

KM Johansen, F Tuomisto, I Makkonen… - Materials Science in …, 2017 - Elsevier
Open volume defects, clearly distinguishable from the isolated Zn-vacancy are observed in
hydrothermally grown ZnO after exposure to deuterium gas at elevated temperatures. From …

Sputtered metal oxide broken gap junctions for tandem solar cells

F Johnson, SH Song, J Abrahamson, R Liptak… - Solar Energy Materials …, 2015 - Elsevier
Broken gap metal oxide tunnel junctions have been created for the first time by sputtering.
Using a ceramic ZnO–SnO 2 target and a reactively sputtered copper target we deposited …

Defects in virgin hydrothermally grown n-type ZnO studied by temperature dependent Hall effect measurements

R Schifano, EV Monakhov, L Vines… - Journal of Applied …, 2009 - pubs.aip.org
Temperature dependent Hall (TDH) effect measurements have been performed on three
virgin and hydrothermally grown ZnO samples with resistivities between∼ 5 and∼ 200 Ω …

Shallow levels in virgin hydrothermally grown n-type ZnO studied by thermal admittance spectroscopy

R Schifano, EV Monakhov, BG Svensson… - Physica B: Condensed …, 2009 - Elsevier
Three n-type single crystal hydrothermally grown ZnO samples with resistivities of 5.1±0.6,
15±2 and 220±20Ωcm, respectively, have been electrically characterized using thermal …