Characteristics of MAPbI3 Stacked on the GaN Nanowires-On-Glass

Authors
Lee, Kwang JaeKim, Yeong JaeMin, Jung-HongKang, Chun HongSubedi, Ram ChandraZhang, HuafanAl-Maghrabi, LatifahPark, KwangwookAhn, DantePak, YusinNg, Tien KheeSong, Young MinOoi, Boon S.Bakr, Osman M.Min, Jungwook
Issue Date
2024-05
Publisher
Wiley-VCH Verlag
Citation
Advanced Electronic Materials
Abstract
When implementing optoelectronic devices through the stacking of heterogeneous materials, considering the bandgap offset is crucial for achieving efficient carrier dynamics. In this study, the bandgap offset characteristics are investigated when n-type gallium nitride nanowires (n-GaN NWs) are used as electron transport layers in methylammonium lead iodide (MAPbI(3))-based optoelectronic devices. n-GaN NWs are grown on indium-tin-oxide (ITO)-coated glass via the plasma-assisted molecular beam epitaxy (PA-MBE) process to form the "GaN NWs-on-glass" platform. A MAPbI(3) thin film is then spin-coated on the GaN NWs-on-glass. X-ray photoelectron spectroscopy (XPS) shows that the valence and conduction band offsets in the MAPbI(3)/n-GaN heterostructure are 2.19 and 0.40 eV, respectively, indicating a type-II band alignment ideal for optoelectronic applications. Prototype photovoltaic devices stacking perovskite on GaN NWs-on-glass show excellent interfacial charge-transfer ability, photon recycling, and carrier extraction efficiency. As a pioneering step in exploiting the diverse potential of the GaN-on-glass, it is demonstrated that the junction characteristics of MAPbI(3)/n-GaN NW heterostructures can lead to a variety of optoelectronic device applications.
Keywords
LIGHT-EMITTING-DIODES; TEMPERATURE CRYSTALLIZATION; EPITAXIAL-GROWTH; THIN-FILMS; PEROVSKITE; LAYER; PHOTODETECTOR; DEGRADATION; NUCLEATION; EFFICIENCY; electron transport layer; GaN nanowires; GaN-on-glass; MAPbI(3); photodetector; solar cell
ISSN
2199-160X
URI
https://pubs.kist.re.kr/handle/201004/150054
DOI
10.1002/aelm.202400095
Appears in Collections:
KIST Article > 2024
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML

qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE