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List of works by Tomokazu Umeyama

A chemical approach to perovskite solar cells: control of electron-transporting mesoporous TiO2 and utilization of nanocarbon materials.

scientific article published on 26 October 2017

A single cis-2 regioisomer of ethylene-tethered indene dimer-fullerene adduct as an electron-acceptor in polymer solar cells

scientific article published on 01 May 2015

Bisquinoxaline-fused porphyrins for dye-sensitized solar cells.

scientific article published on 17 May 2011

Carbon nanotube wiring of donor-acceptor nanograins by self-assembly and efficient charge transport

scientific article published on 14 April 2011

Comparison of electrode structures and photovoltaic properties of porphyrin-sensitized solar cells with TiO2 and Nb, Ge, Zr-added TiO2 composite electrodes.

scientific article published in December 2006

Correction to "Segregated Donor-Acceptor Columns in Liquid Crystals That Exhibit Highly Efficient Ambipolar Charge Transport".

scientific article published on 21 September 2017

Development of a novel composite material with carbon nanotubes assisted by self-assembled peptides designed in conjunction with β-sheet formation

scientific article published on 04 April 2012

Effect of Silicon Surface for Perovskite/Silicon Tandem Solar Cells: Flat or Textured?

scientific article published on 04 October 2018

Effects of alkyl chain length and substituent pattern of fullerene bis-adducts on film structures and photovoltaic properties of bulk heterojunction solar cells

scientific article published on 17 September 2014

Effects of dihydronaphthyl-based [60]fullerene bisadduct regioisomers on polymer solar cell performance

scientific article published on 19 July 2012

Effects of fullerene encapsulation on structure and photophysical properties of porphyrin-linked single-walled carbon nanotubes

scientific article published on 21 September 2011

Effects of fullerene substituents on structure and photoelectrochemical properties of fullerene nanoclusters electrophoretically deposited on nanostructured SnO2 electrodes.

scientific article published in March 2005

Effects of porphyrin substituents on film structure and photoelectrochemical properties of porphyrin/fullerene composite clusters electrophoretically deposited on nanostructured SnO2 electrodes.

scientific article published in January 2007

Efficient Exciton Diffusion in Micrometer-Sized Domains of Nanographene-Based Nonfullerene Acceptors with Long Exciton Lifetimes in Blend Films with Conjugated Polymer

scientific article published on 21 August 2020

Efficient photocurrent generation by SnO2 electrode modified electrophoretically with composite clusters of porphyrin-modified silica microparticle and fullerene.

scientific article published in January 2006

Electron transfer cascade by organic/inorganic ternary composites of porphyrin, zinc oxide nanoparticles, and reduced graphene oxide on a tin oxide electrode that exhibits efficient photocurrent generation

scientific article published on 03 May 2011

Exclusive occurrence of photoinduced energy transfer and switching of its direction by rectangular π-extension of nanographenes

scientific article published on 05 June 2019

Formation and Photodynamic Behavior of Transition Metal Dichalcogenide Nanosheet-Fullerene Inorganic/Organic Nanohybrids on Semiconducting Electrodes.

scientific article

Formation of single-walled carbon nanotube thin films enriched with semiconducting nanotubes and their application in photoelectrochemical devices

scientific article published on 08 March 2011

Geometries, Electronic Couplings, and Hole Dissociation Dynamics of Photoinduced Electron-Hole Pairs in Polyhexylthiophene-Fullerene Dyads Rigidly Linked by Oligophenylenes

scientific article published on 15 April 2016

Glassy Porphyrin/C60 Composites: Morphological Engineering of C60 Fullerene with Liquefied Porphyrins

scientific article published on 04 November 2020

Good solvent effects of C70 cluster formations and their electron-transporting and photoelectrochemical properties.

scientific article published on 5 February 2010

Host-guest interactions in the supramolecular incorporation of fullerenes into tailored holes on porphyrin-modified gold nanoparticles in molecular photovoltaics.

scientific article published in December 2005

Hydrogen bonding effects on the surface structure and photoelectrochemical properties of nanostructured SnO2 electrodes modified with porphyrin and fullerene composites.

scientific article published in October 2005

Interface Optoelectronics Engineering for Mechanically Stacked Tandem Solar Cells Based on Perovskite and Silicon.

scientific article published on 31 October 2016

Isomer Effects of Fullerene Derivatives on Organic Photovoltaics and Perovskite Solar Cells

scientific article published on 18 July 2019

J-aggregation of a sulfonated amphiphilic porphyrin at the air-water interface as a function of pH.

scientific article published on 25 January 2011

Large pi-aromatic molecules as potential sensitizers for highly efficient dye-sensitized solar cells.

scientific article published in November 2009

Lead-free perovskite solar cells using Sb and Bi-based A3B2X9 and A3BX6 crystals with normal and inverse cell structures

scientific article published on 22 September 2017

Molecular interactions on single-walled carbon nanotubes revealed by high-resolution transmission microscopy

scientific article

Novel unsymmetrically pi-elongated porphyrin for dye-sensitized TiO2 cells

scientific article published on 01 May 2007

Occurrence of photoinduced charge separation by the modulation of the electronic coupling between pyrene dimers and chemically converted graphenes.

scientific article

Photodynamic and photothermal effects of semiconducting and metallic-enriched single-walled carbon nanotubes.

scientific article

Photothermal ablation of tumor cells using a single-walled carbon nanotube-peptide composite.

scientific article

Preparation and Photophysical and Photoelectrochemical Properties of a Covalently Fixed Porphyrin-Chemically Converted Graphene Composite

scientific article published on 28 February 2012

Regioisomer effects of [70]fullerene mono-adduct acceptors in bulk heterojunction polymer solar cells.

scientific article published on 19 August 2016

Segregated donor-acceptor columns in liquid crystals that exhibit highly efficient ambipolar charge transport

scientific article published on 28 June 2011

Selective formation and efficient photocurrent generation of [70]fullerene-single-walled carbon nanotube composites.

scientific article published in April 2010

Self-assembling porphyrins and phthalocyanines for photoinduced charge separation and charge transport

scientific article published on 19 March 2012

Spontaneous Complexation of Fullerene Aggregates on Nanodiamond Aggregates and Their Enhanced Photocurrent Generation

scientific article published on 05 August 2019

Structure and photoelectrochemical properties of phthalocyanine and perylene diimide composite clusters deposited electrophoretically on nanostructured SnO2 electrodes.

scientific article published in June 2006

Synthesis and Isolation of cis-2 Regiospecific Ethylene-Tethered Indene Dimer-[70]Fullerene Adduct for Polymer Solar Cell Applications

scientific article published on 27 July 2015

Synthesis of poly(vinylene-arsine)s: alternating radical copolymerization of arsenic atomic biradical equivalent and phenylacetylene.

scientific article published in June 2002

Tunable soret-band splitting of an amphiphilic porphyrin by surface pressure

scientific article published on 01 August 2008

Unique Tube-Ring Interactions: Complexation of Single-Walled Carbon Nanotubes with Cycloparaphenyleneacetylenes

scientific article published on 21 May 2018

Unique cohesive nature of the β1-isomer of [70]PCBM fullerene on structures and photovoltaic performances of bulk heterojunction films with PffBT4T-2OD polymers

scientific article published on 18 December 2017

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