Chun‐Guey Wu

ORCID: 0000-0001-8540-5602
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Research Areas
  • Conducting polymers and applications
  • TiO2 Photocatalysis and Solar Cells
  • Perovskite Materials and Applications
  • Advanced Photocatalysis Techniques
  • Organic Electronics and Photovoltaics
  • Quantum Dots Synthesis And Properties
  • Chalcogenide Semiconductor Thin Films
  • Polyoxometalates: Synthesis and Applications
  • Transition Metal Oxide Nanomaterials
  • Advanced Nanomaterials in Catalysis
  • Analytical Chemistry and Sensors
  • Electrochemical sensors and biosensors
  • Supercapacitor Materials and Fabrication
  • Solid-state spectroscopy and crystallography
  • Organic Light-Emitting Diodes Research
  • Advanced battery technologies research
  • Molecular Junctions and Nanostructures
  • Mesoporous Materials and Catalysis
  • Electrochemical Analysis and Applications
  • Advanced Sensor and Energy Harvesting Materials
  • Advancements in Battery Materials
  • Thin-Film Transistor Technologies
  • Polymer Nanocomposite Synthesis and Irradiation
  • Catalytic Processes in Materials Science
  • Advanced Battery Materials and Technologies

National Central University
2016-2025

National Taiwan University
2010-2016

Institute of Chemistry, Academia Sinica
2016

Changhong (China)
2014-2016

National Engineering Research Center of Electromagnetic Radiation Control Materials
2013

University of Electronic Science and Technology of China
2013

École Polytechnique Fédérale de Lausanne
2009-2012

Wuhan University
2008

Purdue University West Lafayette
1994-1997

Michigan State University
1989-1996

A high molar extinction coefficient heteroleptic ruthenium complex, incorporating an electron-rich hexylthio-terminal chain, has been synthesized and demonstrated as efficient sensitizer for dye-sensitized solar cells. With this new excellent power conversion efficiency is 11.5% 4.7% obtained under irradiation of full sunlight (air mass 1.5 global) in combination with a volatility electrolyte solid state hole transporting material, respectively. The devices low showed good stability...

10.1021/nn900756s article EN ACS Nano 2009-09-11

Conducting filaments of polyaniline have been prepared in the 3-nanometer-wide hexagonal channel system aluminosilicate MCM-41. Adsorption aniline vapor into dehydrated host, followed by reaction with peroxydisulfate, leads to encapsulated filaments. Spectroscopic data show that are protonated emeraldine salt form, and chromatography indicates chain lengths several hundred rings. The significant conductivity while channels, as measured microwave absorption at 2.6 gigahertz. This...

10.1126/science.264.5166.1757 article EN Science 1994-06-17

The inverted CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3</sub> cell fabricated using a two-step method with H<sub>2</sub>O as an additive in PbI<sub>2</sub> solution exhibited extremely high FF of 85%.

10.1039/c5ee00645g article EN Energy & Environmental Science 2015-01-01

A high quality thick (500 nm) CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3</sub>perovskite absorber with a horizontal grain size up to 3 μm and lateral equal the film thickness was prepared by synergistic effect of H<sub>2</sub>O additive DMF vapor treatment<italic>via</italic>a two-step spin coating method.

10.1039/c6ee03586h article EN Energy & Environmental Science 2017-01-01

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTConductive-polymer bronzes. Intercalated polyaniline in vanadium oxide xerogelsMercouri G. Kanatzidis, Chun Guey Wu, Henry O. Marcy, and Carl R. KannewurfCite this: J. Am. Chem. Soc. 1989, 111, 11, 4139–4141Publication Date (Print):May 1, 1989Publication History Published online1 May 2002Published inissue 1 1989https://pubs.acs.org/doi/10.1021/ja00193a078https://doi.org/10.1021/ja00193a078research-articleACS PublicationsRequest reuse...

10.1021/ja00193a078 article EN Journal of the American Chemical Society 1989-05-01

The encapsulation of graphite-type carbon wires in the regular, 3-nanometer-wide hexagonal channels mesoporous host MCM-41 is reported. Acrylonitrile monomers are introduced through vapor or solution transfer and polymerized with external radical initiators. Pyrolysis intrachannel polyacrylonitrile results filaments whose microwave conductivity about 10 times that bulk carbonized polyacrylonitrile. MCM plays a key role ordering structure, most likely parallel alignment precursor polymer...

10.1126/science.266.5187.1013 article EN Science 1994-11-11

Dyeing for sunlight: A new dye CYC-B1 (see picture), with the highest absorption coefficient known so far Ru-based photosensitizers, was prepared. Solar cells sensitized have a very high current density, and conversion efficiency of is 10 % higher than that cis-di(thiocyanato)bis(2,2′-bipyridyl-4,4′-dicarboxylate)ruthenium(II) under AM 1.5 simulated sunlight. Supporting information this article available on WWW http://www.wiley-vch.de/contents/jc_2002/2006/z601463_s.pdf or from author....

10.1002/anie.200601463 article EN Angewandte Chemie International Edition 2006-07-25

A two-step spin-coating process was used to synthesize perovskite films at ambient conditions. Combining a PEDOT:PSS hole-transport layer and PC<sub>71</sub>BM acceptor, the device achieves power conversion efficiency of 16.31% with remarkably high<italic>V</italic><sub>oc</sub>of 1.05 V FF 0.78.

10.1039/c4ta03674c article EN Journal of Materials Chemistry A 2014-01-01

A new series of metal-free organic chromophores (TPA-TTAR-A (1), TPA-T-TTAR-A (2), TPA-TTAR-T-A (3), and TPA-T-TTAR-T-A (4)) are synthesized for application in dye-sensitized solar cells (DSSC) based on a donor-π-bridge-acceptor (D-π-A) design. Here simple triphenylamine (TPA) moiety serves as the electron donor, cyanoacrylic acid acceptor anchoring group, novel tetrathienoacene (TTA) π-bridge unit. Because extensively conjugated TTA π-bridge, these dyes exhibit high extinction coefficients...

10.1021/ja513254z article EN Journal of the American Chemical Society 2015-03-13

Further improvements in perovskite solar cells require better control of ionic defects the photoactive layer during manufacturing stage and their usage

10.1038/s41586-024-07705-5 article EN cc-by Nature 2024-06-24

Polyaniline can be inserted in V2O5·nH2O xerogel by situ oxidative polymerization/intercalation of aniline or anilinium air. The reaction is facile and topotactic, forming polyaniline as the emeraldine salt. interlayer separation (5.6 Å) consistent with a monolayer polymer chains V2O5 framework. Evidence presented that oxygen acts an electron acceptor both during long after intercalation complete. crucial role this probed discussed. In alternative route, first intercalated then, second step,...

10.1021/cm9600236 article EN Chemistry of Materials 1996-01-01

Eine Effizienz bis 9.72 % in farbstoffsensibilisierten Solarzellen (DSCs) zeigen zwei neue rutheniumbasierte Supersensibilisatoren (CYC-B6S und CYC-B6L), denen die Lochtransporteinheit ein konjugiertes Segment nacheinander mit dem Bipyridin des Hilfsliganden verknüpft sind. Außerdem wird Steigerung der Konversionseffizienz von Flüssigkeits-DSCs durch Verknüpfen einer Carbazoleinheit Ruthenium-Sensibilisators vorgestellt. Supporting information for this article is available on the WWW under...

10.1002/ange.200802120 article DE Angewandte Chemie 2008-08-07

Two new heteroleptic ruthenium-based dyes, SJW-E1 and CYC-B3 (see figure), with very high photon-to-current conversion efficiency are reported their application in dye-sensitized solar cells (DSCs) described. The higher performance of DSCs is suggested to arise from successful molecular-engineering the ancillary ligand, that is, two-dimensional conjugation enhancement functional group substitution. Supporting information for this article available on WWW under...

10.1002/adma.200701111 article EN Advanced Materials 2007-10-31

Abstract Sputtering made ZnO thin film was used as an electron-transport layer in a regular planar perovskite solar cell based on high quality CH 3 NH PbI absorber prepared with two-step spin-coating. An efficiency up to 15.9% under AM 1.5G irradiation is achieved for the fabricated Ar working gas. The atmosphere of sputtering chamber can tune surface electronic properties (band structure) resulting and therefore photovoltaic performance corresponding cell. Precise engineering found be one...

10.1038/srep13211 article EN cc-by Scientific Reports 2015-09-28

An inverted perovskite solar cell with a record-high <italic>V</italic><sub>oc</sub> of 1.61 V based on CH<sub>3</sub>NH<sub>3</sub>PbBr<sub>3</sub> fabricated at moderate temperature (∼100 °C) and high LUMO ICBA acceptor was reported. Solvent annealing the donor/acceptor layer shown to be way improve performance low quality film.

10.1039/c5nr07739g article EN Nanoscale 2016-01-01

The quality of the perovskite absorber is known to be most crucial parameter for photovoltaic performance solar cells. By combining one-step anti-solvent engineering method followed by gas blowing, MAPbI3 film containing highly oriented multi-crystalline nanograins (150∼500 nm) was made first. A user-friendly, simple, large-throughput, and reproducible post-solvent annealing (made treating with H2O under spinning) used enlarge grains up 1.5 μm. Inverted (p-i-n) cells based on this ordered,...

10.1021/acsnano.8b05731 article EN ACS Nano 2018-10-03

Abstract The power conversion efficiency (PCE) of the perovskite solar cell is high enough to be commercially viable. next important issue stability device. This article discusses effect grain‐size on long‐term inverted cells. Perovskite films composed various sizes grains were prepared by controlling solvent annealing time. related cells was investigated both in ambient atmosphere at relative humidity approximately 30–40 % and a nitrogen filled glove box (H 2 O&lt;0.1 ppm, O &lt;10 ppm)....

10.1002/cssc.201600887 article EN ChemSusChem 2016-09-07

Combining halogen composition and film casting engineering, a high quality homogeneous with large area can be prepared using one-step method. Inverted solar cells modules, based on mixed-halide perovskite films, achieved the highest efficiency of 16.52% 14.3%, respectively.

10.1039/c6ta05209f article EN Journal of Materials Chemistry A 2016-01-01

Nano-structured CuO-Cu2O complex thin film-based perovskite solar cells were fabricated on an indium tin oxide (ITO)-coated glass and studied. Copper (Cu) films with a purity of 99.995 % deposited ITO-coated by magnetron reactive sputtering. To optimize the properties nano-structured films, Cu thermally oxidized at various temperatures from 300 to 400 °C. A CH3NH3PbI3 absorber was top film one-step spin-coating process toluene washing treatment. Following optimization, maximum power...

10.1186/s11671-016-1621-4 article EN cc-by Nanoscale Research Letters 2016-09-15

Abstract Perovskite solar cells (PSCs) have received great attention due to their outstanding performance and low processing costs. To boost performance, one approach is reinforce the built‐in electric field (BEF) promote oriented carrier transport. The BEF maximized by reinforcing work function difference between cathode anode (Δμ 1 ) increasing lower upper surfaces of perovskite film 2 via introduction dipole molecules, denoted as PTFCN CF3BACl. synergistic reinforcement improves charge...

10.1002/adfm.201909755 article EN Advanced Functional Materials 2020-03-04

Defect passivation is crucial for improving the performance and stability of perovskite solar cells (PSCs). However, this process influences surface work function (SWF) perovskite, potentially causing an energy-level mismatch. Previous studies that relied solely on electrostatic potential (ESP) analysis passivator dipole moments may not adequately describe changes in SWF at passivator-perovskite interface. Our results reveal interaction between defects would lead to different trends when...

10.1021/acsenergylett.4c00839 article EN cc-by ACS Energy Letters 2024-05-28

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPolyaniline Wires in Oxidant-Containing Mesoporous Channel HostsChun-Guey Wu and Thomas BeinCite this: Chem. Mater. 1994, 6, 8, 1109–1112Publication Date (Print):August 1, 1994Publication History Published online1 May 2002Published inissue 1 August 1994https://pubs.acs.org/doi/10.1021/cm00044a008https://doi.org/10.1021/cm00044a008research-articleACS PublicationsRequest reuse permissionsArticle Views497Altmetric-Citations164LEARN ABOUT THESE...

10.1021/cm00044a008 article EN Chemistry of Materials 1994-08-01
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