Abo Bibliothek: Guest
Digitales Portal Digitale Bibliothek eBooks Zeitschriften Referenzen und Berichte Forschungssammlungen
International Journal for Multiscale Computational Engineering
Impact-faktor: 1.016 5-jähriger Impact-Faktor: 1.194 SJR: 0.554 SNIP: 0.68 CiteScore™: 1.18

ISSN Druckformat: 1543-1649
ISSN Online: 1940-4352

International Journal for Multiscale Computational Engineering

DOI: 10.1615/IntJMultCompEng.2015011405
pages 115-121

NUMERICAL STUDY OF p − n INTERFACE EFFECTS

Seong Min Kim
The Office of Computational Energy Science, Maetan 3-dong, Yeongtong-gu, Suwon-si, Gyeonggi-do, 443-373, Korea; CAE, Platform Technology Lab, Samsung Advanced Institute of Technology, Suwon-si, Gyeonggi-do, 443-803, Korea
J. W. Ha
Department of Chemistry, Korea Advanced Institute of Science and Technology, Daejeon 305-701, Korea
J.-H. Kwon
School of Electronics Engineering, Kyungpook National University, Daegu, Republic of Korea
J.-H. Jung
School of Electronics Engineering, Kyungpook National University, Daegu, Republic of Korea
J.-H. Bae
School of Electronics Engineering, Kyungpook National University, Daegu, Republic of Korea
H. Kim
Photo-Electronic Hybrids Research Center, Korea Institute of Science and Technology, Seoul 136-791, Korea
J. B. Kim
Department of Chemistry, Korea Advanced Institute of Science and Technology, Daejeon 305-701, Korea

ABSTRAKT

In this study, we simulated piezoelectric enhancements of p − n core-shel nanowires with an inner-core cylinder of n-type ZnO and an outer-shell cylinder of p-type poly-3-hexylthiophene. Compared with conventional n-type ZnO nanowires, the piezoelectric potential of p − n core-shell nanowires with the same dimensions (core part; n-ZnO), calculated by subtracting the electrical potential of the uncompressed core-shell nanowires [φele (Tz = 0)] from that of compressed nanowires (φtotalele) according to φp − npiezo = φtotal eleφele (Tz = 0), are enhanced by more than a factor of 10. As the magnitude of vertical external compression (Tz) is varied from 0 to −9×107 N/m2, the piezoelectric potential of the model system increases. This improvement in the piezoelectric potential is attributed to the presence of a depletion zone at the p − n interface (space-charge region), which reduces the carrier screening of the piezoelectric potential by removing free carriers. Our results suggest that the structure proposed here for p − n core-shell nanowires could improve the performance of photovoltaic systems.


Articles with similar content:

DEFECT FORMATION MECHANISMS OF ZINC SELENIDE LAYERS DOPED BY ISOVALENT IMPURITIES OF THE II GROUP
Telecommunications and Radio Engineering, Vol.78, 2019, issue 8
M. M. Berezovskiy, O. V. Kinzerska, Victor P. Makhniy
IN-SITU THERMAL INTEGRATION BETWEEN H2O/CO2 CO-ELECTROLYSIS AND THERMOCHEMISTRY BY HEAT-FLOW DESIGN FOR EFFICIENT DIRECT POWER-TO-METHANE
International Heat Transfer Conference 16, Vol.11, 2018, issue
Wenying Li, Yu Luo, Yanbo Chen, Yixiang Shi, NingSheng Cai
PREPARATION AND PHOTOTHERMAL CHARACTERIZATION OF NANOCOMPOSITES BASED ON HIGH DENSITY POLYETHYLENE FILLED WITH EXPANDED GRAPHITE: PARTICLE SIZE AND SHAPE EFFECTS
ICHMT DIGITAL LIBRARY ONLINE, Vol.0, 2011, issue
Nicolas Horny, Alpaslan Turgut, Maria Omastova, Mihail Chirtoc, Iskender Kokey, Ismail Tavman
A QUANTITATIVE STUDY ON LOSS PROCESSES IN MULTIPLE ENERGY GAP SOLAR CELLS
International Heat Transfer Conference 16, Vol.20, 2018, issue
Ao Wang, Yimin Xuan
LARGE-EDDY SIMULATION OF STRAIGHT COMPOUND OPEN-CHANNEL FLOWS
TSFP DIGITAL LIBRARY ONLINE, Vol.4, 2005, issue
Yoshihisa Kawahara, Satoshi Yokojima