Publications by authors named "Youhei Numata"

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Solution-Crystalized AgBiS Films for Solar Cells Generating a Photo-Current Density Over 31 mA cm.
Ludmila Cojocaru, Ajay Kumar Jena, Miwako Yamamiya, Youhei Numata, Masashi Ikegami

Adv Sci (Weinh)· November 2024

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Over 1.4 V for Amorphous Tin-Oxide-Based Dopant-Free CsPbIBr Perovskite Solar Cells.
Zhanglin Guo, Ajay Kumar Jena, Izuru Takei, Gyu Min Kim, Muhammad Akmal Kamarudin, Youhei Numata

J Am Chem Soc· May 2020

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Low-Temperature Synthesized Nb-Doped TiO Electron Transport Layer Enabling High-Efficiency Perovskite Solar Cells by Band Alignment Tuning.
Yoshitaka Sanehira, Naoyuki Shibayama, Youhei Numata, Masashi Ikegami, Tsutomu Miyasaka

ACS Appl Mater Interfaces· April 2020

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Full Efficiency Recovery in Hole-Transporting Layer-Free Perovskite Solar Cells With Free-Standing Dry-Carbon Top-Contacts.
Salvatore Valastro, Emanuele Smecca, Salvatore Sanzaro, Ioannis Deretzis, Antonino La Magna, Youhei Numata

Front Chem· April 2020

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Thiocyanate Containing Two-Dimensional Cesium Lead Iodide Perovskite, CsPbI(SCN): Characterization, Photovoltaic Application, and Degradation Mechanism.
Youhei Numata, Yoshitaka Sanehira, Ryo Ishikawa, Hajime Shirai, Tsutomu Miyasaka

ACS Appl Mater Interfaces· December 2018

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Spontaneous Synthesis of Highly Crystalline TiO Compact/Mesoporous Stacked Films by a Low-Temperature Steam-Annealing Method for Efficient Perovskite Solar Cells.
Yoshitaka Sanehira, Youhei Numata, Masashi Ikegami, Tsutomu Miyasaka

ACS Appl Mater Interfaces· May 2018

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Amorphous Metal Oxide Blocking Layers for Highly Efficient Low-Temperature Brookite TiO-Based Perovskite Solar Cells.
Atsushi Kogo, Yoshitaka Sanehira, Youhei Numata, Masashi Ikegami, Tsutomu Miyasaka

ACS Appl Mater Interfaces· January 2018

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Solar Water Splitting Utilizing a SiC Photocathode, a BiVO Photoanode, and a Perovskite Solar Cell.
Akihide Iwase, Akihiko Kudo, Youhei Numata, Masashi Ikegami, Tsutomu Miyasaka

ChemSusChem· November 2017

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Lead-free perovskite solar cells using Sb and Bi-based ABX and ABX crystals with normal and inverse cell structures.
Ajay Kumar Baranwal, Hideaki Masutani, Hidetaka Sugita, Hiroyuki Kanda, Shusaku Kanaya, Youhei Numata

Nano Converg· September 2017

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Controlled Crystal Grain Growth in Mixed Cation-Halide Perovskite by Evaporated Solvent Vapor Recycling Method for High Efficiency Solar Cells.
Youhei Numata, Atsushi Kogo, Yosuke Udagawa, Hideyuki Kunugita, Kazuhiro Ema

ACS Appl Mater Interfaces· June 2017

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Stability of solution-processed MAPbI3 and FAPbI3 layers.
Emanuele Smecca, Youhei Numata, Ioannis Deretzis, Giovanna Pellegrino, Simona Boninelli

Phys Chem Chem Phys· May 2016

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Impacts of Heterogeneous TiO2 and Al2O3 Composite Mesoporous Scaffold on Formamidinium Lead Trihalide Perovskite Solar Cells.
Youhei Numata, Yoshitaka Sanehira, Tsutomu Miyasaka

ACS Appl Mater Interfaces· February 2016

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Circle chain embracing donor-acceptor organic dye: simultaneous improvement of photocurrent and photovoltage for dye-sensitized solar cells.
Jian Liu, Youhei Numata, Chuanjiang Qin, Ashraful Islam, Xudong Yang

Chem Commun (Camb)· September 2013

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Chemistry of fullerene epoxides: synthesis, structure, and nucleophilic substitution-addition reactivity.
Yusuke Tajima, Kazumasa Takeshi, Yasuo Shigemitsu, Youhei Numata

Molecules· May 2012

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Preparation of donor-acceptor type organic dyes bearing various electron-withdrawing groups for dye-sensitized solar cell application.
Youhei Numata, Islam Ashraful, Yasuhiro Shirai, Liyuan Han

Chem Commun (Camb)· June 2011

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Field-induced ferrimagnetic state in a molecule-based magnet consisting of a Co(II) ion and a chiral triplet Bis(nitroxide) radical.
Youhei Numata, Katsuya Inoue, Nikolai Baranov, Mohamedally Kurmoo, Koichi Kikuchi

J Am Chem Soc· August 2007

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