Impact of Local Structure on Transparent Conductors
Kenneth R. Poeppelmeier
Department of Chemistry, Northwestern University 2145 Sheridan Rd. Evanston, IL,
60647 USA
E-mail:
The integrated process of addressing functionality and stability followed by laboratory
synthesis and characterization could be expanded to more complex systems, such as the
anion-deficient, fluorite related family that is particularly prominent in transparent conductors
(TCs).
1
For example, Zn
0.456
In
1.084
Ge
0.460
O
3
(ZIGO) adopts a never before observed fluorite
and bixbyite related structure.
2
The possible anion deficiencies of fluorite produce a complex
cation topological network, with varied local structures whose impact on TC properties is not
well understood. Indeed, thus far, in fluorite-based materials only 6-coordinate cation sites
have received any widespread attention in the TC field. We have taken the first steps in
investigating the impact of alternative local structures on TC properties. Our initial
investigations utilize Ga
3-x
In
5+x
Sn
2
O
16
(0.3 ≤ x ≤ 1.6), which has its own complex local
structures which span four differently coordinated sites.
3-4
The combination of x-ray, neutron
and electron diffraction studies has allowed a deeper understanding of the optimal
experimental synthetic conditions and properties.
(1) Gautier, R.; Zhang, X.; Hu, L.; Yu, L.; Lin, Y.; Sunde, T.O.L.; Chon, D.; Poeppelmeier,
K.R.; Zunger, A.
Nature
,
2015
,
7
, 308-316.
(2) Rickert, K.; Sedefoglu, N.; Malo, S.; Caignaert, V.; Kavak, H.; Poeppelmeier, K. R.
Chem. Mater.
,
2015
,
27
, 5072-5079.
(3) Dolgonos, A.; Lam, K.; Poeppelmeier, K.R.; Freeman, A.J.; Mason, T.O.
J. Appl.
Phys.
,
2014
,
115
, 013703.
(4) Rickert, K.; Huq, A.; Lapidus, S.H.; Wustrow, A.; Ellis, D.E.; Poeppelmeier, K.R.
Chem.
Mater.
,
2015
,
27
, 8084-8093.
P 9
-124-
