Hammad Arshad Cheema

Works (13)

Updated: July 5th, 2023 15:42

2019 journal article

Unique hue stimulus selection using Munsell color chips under different chroma levels and illumination conditions

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION, 36(6), 983–993.

By: R. Shamey n , M. Zubair n & H. Cheema n

TL;DR: It was found that observers' UH choices varied more for low chroma samples under different lighting conditions compared to high Chroma samples, and that Hue shift predictions based on CAT02 transform were found to agree well with observer responses under different illumination conditions. (via Semantic Scholar)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: June 17, 2019

2016 journal article

Design and synthesis of BODIPY sensitizers with long alkyl chains tethered to N-carbazole and their application for dye sensitized solar cells

MATERIALS CHEMISTRY AND PHYSICS, 184, 57–63.

By: H. Cheema n, R. Younts n, B. Gautam n, K. Gundogdu n  & A. El-Shafei n 

Contributors: H. Cheema n, R. Younts n, B. Gautam n, K. Gundogdu n  & A. El-Shafei n 

author keywords: Electronic materials; Interfaces; Optical materials; Surfaces; Electrochemical techniques
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 6, 2018

2016 journal article

Highly efficient panchromatic dye-sensitized solar cells: Synergistic interaction of ruthenium sensitizer with novel co-sensitizers carrying different acceptor units

DYES AND PIGMENTS, 132, 316–328.

By: D. Babu *, D. Elsherbiny n, H. Cheema n, A. El-Shafei n  & A. Adhikari *

Contributors: D. Babu *, D. Elsherbiny n, H. Cheema n, A. El-Shafei n  & A. Adhikari *

author keywords: Dye sensitized solar cells; Indole; Co-sensitizers; Acceptors; Density functional theory
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, ORCID
Added: August 6, 2018

2015 journal article

Effect of field view size and lighting on unique-hue selection using Natural Color System object colors

VISION RESEARCH, 113, 22–32.

By: R. Shamey n , M. Zubair n & H. Cheema n

author keywords: Unique hues; Field view size; Natural Color System
MeSH headings : Adult; Color Perception / physiology; Female; Humans; Lighting; Male; Observer Variation; Photic Stimulation / methods; Visual Fields / physiology
TL;DR: Observers' overall variability was found to be higher for UH stimuli selections at the larger field of view, and the highest intra-observer variability was under simulated illuminant D65, followed by A, F11, and F2. (via Semantic Scholar)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2015 journal article

Molecular Engineering and Theoretical Investigation of Novel Metal-Free Organic Chromophores for Dye-Sensitized Solar Cells

ELECTROCHIMICA ACTA, 176, 868–879.

By: D. Babu *, H. Cheema n, D. Elsherbiny n, A. El-Shafei n  & A. Adhikari *

Contributors: D. Babu *, H. Cheema n, D. Elsherbiny n, A. El-Shafei n  & A. Adhikari *

author keywords: Dye sensitized solar cells; Indole; Acceptors; Chromophores; Density functional theory
UN Sustainable Development Goal Categories
Sources: Web Of Science, ORCID
Added: August 6, 2018

2015 journal article

Monodentate pyrazole as a replacement of labile NCS for Ru (II) photosensitizers: Minimum electron injection free energy for dye-sensitized solar cells

DYES AND PIGMENTS, 120, 93–98.

By: H. Cheema n, A. Islam*, L. Han * & A. El-Shafei n 

Contributors: H. Cheema n, A. Islam*, L. Han * & A. El-Shafei n 

author keywords: Dye-sensitized solar cells; Carbazole based electron-donor antennas; Solar-to-electric conversion; Isothiocyanate free Ru (II) bipyridyl complexes; Electron injection free energy; Impedance spectroscopy
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, ORCID
Added: August 6, 2018

2014 journal article

A femtosecond study of the anomaly in electron injection for dye-sensitized solar cells: the influence of isomerization employing Ru(II) sensitizers with anthracene and phenanthrene ancillary ligands

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 17(4), 2750–2756.

By: H. Cheema n, R. Younts n, L. Ogbose *, B. Gautam n, K. Gundogdu n  & A. El-Shafei n 

Contributors: H. Cheema n, R. Younts n, L. Ogbose *, B. Gautam n, K. Gundogdu n  & A. El-Shafei n 

TL;DR: Analysis of photo-induced spectral features measured by femtosecond transient absorption spectroscopy showed that excited electrons in HD-7 are prone to ISC (intersystem crossing) much more than HD-8 and those triplet electrons are not injected into TiO2 efficiently. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 6, 2018

2014 journal article

Influence of Number of Benzodioxan-Stilbazole-based Ancillary Ligands on Dye Packing, Photovoltage and Photocurrent in Dye-Sensitized Solar Cells

ACS APPLIED MATERIALS & INTERFACES, 6(14), 11617–11624.

By: H. Cheema n, A. Islam *, L. Han * & A. El-Shafei n 

Contributors: H. Cheema n, A. Islam *, L. Han * & A. El-Shafei n 

author keywords: dye-sensitized solar cells; mono versus bis-electron-donor ancillary ligands; solar-to-electric conversion; IPCE; Ru(II) bipyridyl complexes
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, ORCID
Added: August 6, 2018

2014 journal article

Influence of mono versus bis-electron-donor ancillary ligands in heteroleptic Ru(II) bipyridyl complexes on electron injection from the first excited singlet and triplet states in dye-sensitized solar cells

JOURNAL OF MATERIALS CHEMISTRY A, 2(34), 14228–14235.

By: H. Cheema n, A. Islam *, L. Han *, B. Gautam n, R. Younts n, K. Gundogdu n , A. El-Shafei n 

Contributors: H. Cheema n, A. Islam *, L. Han *, B. Gautam n, R. Younts n, K. Gundogdu n , A. El-Shafei n 

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 6, 2018

2014 journal article

More stable and more efficient alternatives of Z-907: carbazole-based amphiphilic Ru(II) sensitizers for dye-sensitized solar cells

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 16(48), 27078–27087.

By: H. Cheema n, A. Islam *, R. Younts n, B. Gautam n, I. Bedja *, R. Gupta *, L. Han *, K. Gundogdu n , A. El-Shafei n 

Contributors: H. Cheema n, A. Islam *, R. Younts n, B. Gautam n, I. Bedja *, R. Gupta *, L. Han *, K. Gundogdu n , A. El-Shafei n 

TL;DR: HDR-15 was strikingly stable to light soaking conditions when employed in the presence of an ionic liquid electrolyte, which paves the way for widespread applications of dye-sensitized solar cells with long term stability. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 6, 2018

2014 journal article

Structure-property relationships: Steric effect in ancillary ligand and how it influences photocurrent and photovoltage in dye-sensitized solar cells

DYES AND PIGMENTS, 113, 151–159.

By: H. Cheema n, L. Ogbose * & A. El-Shafei n 

Contributors: H. Cheema n, L. Ogbose * & A. El-Shafei n 

author keywords: Dye-sensitized solar cells; Naphthalene based ancillary ligand; Solar-to-electric conversion; IPCE; Ru (II) bipyridyl complexes; Impedance spectroscopy
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, ORCID
Added: August 6, 2018

2014 journal article

Synthesis and characterization of novel carbazole-based terpyridyl photosensitizers for dye-sensitized solar cells (DSSCs)

DYES AND PIGMENTS, 115, 81–87.

By: D. El-Sherbiny  n, H. Cheema n, F. El-Essawy *, A. Abdel-Megied* & A. El-Shafei n 

Contributors: D. El-Sherbiny  n, H. Cheema n, F. El-Essawy *, A. Abdel-Megied* & A. El-Shafei n 

author keywords: Terpyridyl; Ru(II) complexes; Dye solar cells; Labile NCS; IPCE; Efficiency
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Sources: Web Of Science, ORCID
Added: August 6, 2018

2013 journal article

Conferring flame retardancy on cotton using novel halogen-free flame retardant bifunctional monomers: synthesis, characterizations and applications

Carbohydrate Polymers, 92(1), 885–893.

By: H. Cheema, A. El-Shafei  & P. Hauser

Source: NC State University Libraries
Added: August 6, 2018

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