Surface Charge Trapping in Organolead Halide Perovskites Explored by Single-Particle Photoluminescence Imaging

2015 ◽  
Vol 6 (16) ◽  
pp. 3195-3201 ◽  
Author(s):  
Takashi Tachikawa ◽  
Izuru Karimata ◽  
Yasuhiro Kobori
Keyword(s):  
Surface Charge ◽  
Single Particle ◽  
Charge Trapping ◽  
Halide Perovskites ◽  
Organolead Halide

scholarly journals Single-Particle Organolead Halide Perovskite Photoluminescence as a Probe for Surface Reaction Kinetics

2019 ◽  
Author(s):  
Juvinch R. Vicente ◽  
Ali Rafiei Miandashti ◽  
Kurt Waldo E. Sy Piecco ◽  
Joseph R. Pyle ◽  
Martin E. Kordesch ◽  
...  
Keyword(s):  
Single Particle ◽  
Surface Defect ◽  
Surface Reaction ◽  
Surface States ◽  
Defect States ◽  
Particle Level ◽  
Subsequent Exposure ◽  
Halide Perovskites ◽  
Organolead Halide ◽  
Surface Reaction Kinetics

<div>A revised article has been accepted by ACS Applied Materials and Interfaces. </div>The photoluminescence (PL) of organolead halide perovskites (OHPs) is sensitive to its surface conditions, especially surface defect states, making the PL of small OHP crystals an effective way to report their surface states. At the ensemble level, when averaging a lot of nanocrystals, the photoexcitation of OHP nanorods under inert nitrogen (N<sub>2</sub>) atmosphere leads to PL decline, while subsequent exposure to oxygen (O<sub>2</sub>) results to reversible PL recovery. At the single-particle level, individual OHP nanorods photoblinks, whose probability is dependent on both the excitation intensity and the O<sub>2</sub> concentration. Combining the two sets of information, we are able to quantitatively evaluating the interaction between a single surface defect and a single O<sub>2</sub> molecule using a kinetic model. This model provides fundamental insights that could help reconcile the contradicting views on the interactions of molecular O<sub>2</sub> with OHP materials and help design a suitable OHP interface for a variety of applications in photovoltaics and optoelectronics.

scholarly journals Organolead Halid Perovskites: Organolead Halide Perovskites for Low Operating Voltage Multilevel Resistive Switching (Adv. Mater. 31/2016)

2016 ◽  
Vol 28 (31) ◽  
pp. 6517-6517 ◽  
Author(s):  
Jaeho Choi ◽  
Sunghak Park ◽  
Joohee Lee ◽  
Kootak Hong ◽  
Do-Hong Kim ◽  
...  
Keyword(s):  
Resistive Switching ◽  
Operating Voltage ◽  
Halide Perovskites ◽  
Organolead Halide

scholarly journals The morphology and surface charge-dependent cellular uptake efficiency of upconversion nanostructures revealed by single-particle optical microscopy

2018 ◽  
Vol 9 (23) ◽  
pp. 5260-5269 ◽  
Author(s):  
Di Zhang ◽  
Lin Wei ◽  
Meile Zhong ◽  
Lehui Xiao ◽  
Hung-Wing Li ◽  
...  
Keyword(s):  
Surface Charge ◽  
Optical Microscopy ◽  
Cellular Uptake ◽  
Single Particle ◽  
Cellular Internalization ◽  
Uptake Efficiency ◽  
Size And Shape ◽  
Internalization Process ◽  
Cellular Uptake Efficiency

The cellular uptake efficiency of nanostructures has been demonstrated to be highly dependent on the surface charge, size and shape although the cellular internalization process is still far from being well-understood.

scholarly journals It's a trap! On the nature of localised states and charge trapping in lead halide perovskites

2020 ◽  
Vol 7 (2) ◽  
pp. 397-410 ◽  
Author(s):  
Handong Jin ◽  
Elke Debroye ◽  
Masoumeh Keshavarz ◽  
Ivan G. Scheblykin ◽  
Maarten B. J. Roeffaers ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Materials Science ◽  
Optoelectronic Devices ◽  
Charge Trapping ◽  
Scientific Interest ◽  
Halide Perovskites ◽  
Localised States ◽  
Halide Perovskite ◽  
Lead Halide

The recent surge of scientific interest for lead halide perovskite semiconductors and optoelectronic devices has seen a mix of materials science sub-fields converge on the same “magical” crystal structure.

Remarkably Enhanced Hydrogen Generation of Organolead Halide Perovskites via Piezocatalysis and Photocatalysis

2019 ◽  
Vol 9 (37) ◽  
pp. 1901801 ◽  
Author(s):  
Mengye Wang ◽  
Yunpeng Zuo ◽  
Jingli Wang ◽  
Yi Wang ◽  
Xinpeng Shen ◽  
...  
Keyword(s):  
Hydrogen Generation ◽  
Halide Perovskites ◽  
Organolead Halide

Electronic and Ionic Transport Dynamics in Organolead Halide Perovskites

ACS Nano ◽  
2016 ◽  
Vol 10 (7) ◽  
pp. 6933-6941 ◽  
Author(s):  
Dehui Li ◽  
Hao Wu ◽  
Hung-Chieh Cheng ◽  
Gongming Wang ◽  
Yu Huang ◽  
...  
Keyword(s):  
Ionic Transport ◽  
Transport Dynamics ◽  
Halide Perovskites ◽  
Organolead Halide

scholarly journals Correlating structure and electronic band-edge properties in organolead halide perovskites nanoparticles

2016 ◽  
Vol 18 (22) ◽  
pp. 14933-14940 ◽  
Author(s):  
Qiushi Zhu ◽  
Kaibo Zheng ◽  
Mohamed Abdellah ◽  
Alexander Generalov ◽  
Dörthe Haase ◽  
...  
Keyword(s):  
Lattice Strain ◽  
Lone Pair ◽  
Band Edge ◽  
Electronic Band ◽  
Halide Perovskites ◽  
Organolead Halide ◽  
Stereochemical Activity

Lattice strain modifies the subtle stereochemical activity of the Pb2+ lone-pair in organolead halide perovskites (OHLP) nanoparticles.

Chemical modification of near‐surface charge trapping in polymers

1984 ◽  
Vol 55 (5) ◽  
pp. 1332-1338 ◽  
Author(s):  
S. Haridoss ◽  
M. M. Perlman
Keyword(s):  
Chemical Modification ◽  
Surface Charge ◽  
Charge Trapping ◽  
Near Surface

Application of the Lany–Zunger polaron correction for calculating surface charge trapping

2017 ◽  
Vol 29 (39) ◽  
pp. 394001 ◽  
Author(s):  
Meisam Farzalipour Tabriz ◽  
Bálint Aradi ◽  
Thomas Frauenheim ◽  
Peter Deák
Keyword(s):  
Surface Charge ◽  
Charge Trapping
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