| Synthesis and characterization of black pigments based on calcium manganese oxides for high near-infrared (NIR) reflectance R Oka, T Masui RSC advances 6 (93), 90952-90957, 2016 | 40 | 2016 |
| Synthesis and characterization of Bi4Zr3O12 as an environment-friendly inorganic yellow pigment T Tsukimori, R Oka, T Masui Dyes and Pigments 139, 808-811, 2017 | 26 | 2017 |
| Novel near-infrared reflective black inorganic pigment based on cerium vanadate T Moriomoto, R Oka, K Minagawa, T Masui RSC advances 12 (26), 16570-16575, 2022 | 21 | 2022 |
| Improvement of near-infrared (NIR) reflectivity and black color tone by doping Zn 2+ into the Ca 2 Mn 0.85 Ti 0.15 O 4 structure R Oka, S Iwasaki, T Masui RSC advances 9 (66), 38822-38827, 2019 | 21 | 2019 |
| Eu3+ Site Distribution and Local Distortion of Photoluminescent Ca3WO6:(Eu3+, K+) Double Perovskites as High‐Color‐Purity Red Phosphors T Otsuka, R Oka, T Hayakawa Advanced Science 10 (31), 2302559, 2023 | 17 | 2023 |
| Synthesis and characterisation of SrY 2− x Ce x O 4 as environmentally friendly reddish-brown pigments R Oka, Y Shobu, F Aoyama, T Tsukimori, T Masui RSC Advances 7 (87), 55081-55087, 2017 | 16 | 2017 |
| Perovskite-type ALnO3 (A= Ca, Sr, Ba; Ln= Ce, Pr, Tb) oxides as environmentally friendly yellow pigments R Oka, T Tsukimori, H Inoue, T Masui Journal of the Ceramic Society of Japan 125 (8), 652-656, 2017 | 15 | 2017 |
| Synthesis and Color Evaluation of Ta5+-Doped Bi2O3 R Oka, Y Shobu, T Masui ACS omega 4 (4), 7581-7585, 2019 | 12 | 2019 |
| Synthesis and characterisation of Ba (Zn 1− x Co x) 2 Si 2 O 7 (0≤ x≤ 0.50) for blue-violet inorganic pigments T Tsukimori, Y Shobu, R Oka, T Masui RSC advances 8 (16), 9017-9022, 2018 | 12 | 2018 |
| Raman Spectroscopic Investigation and Electronic State Calculation for Ca2 (Mn, Ti) O4 Black Pigments with High Near-Infrared (NIR) Reflectivity R Oka, T Hayakawa Inorganic Chemistry 61 (17), 6500-6507, 2022 | 9 | 2022 |
| Synthesis and Characterization of Ca1–x Eu x ZrO3 as Environmentally Friendly Inorganic Yellow Pigments K Minagawa, Y Nishiguchi, R Oka, T Masui ACS Omega 6 (4), 3411-3417, 2021 | 8 | 2021 |
| Effect of [MnO6] Octahedra to the Coloring Mechanism of (Li1–x Na x) 2MnO3 R Oka, K Kusukami, T Masui ACS Omega 5 (22), 13108-13114, 2020 | 7 | 2020 |
| Novel Environmentally Friendly Inorganic Orange Pigments Based on Ca14Al10Zn6O35 R Oka, T Kosaya, T Masui Chemistry Letters 47 (12), 1522-1525, 2018 | 5 | 2018 |
| Local Structural Investigation of Near-Infrared-Reflective Black Ca2(Mn,Ti)O4 Pigments Using Synchrotron Radiation X-Ray and Density Functional Theory … R Oka, T Hayakawa Inorganic Chemistry 62 (36), 14647-14658, 2023 | 3 | 2023 |
| Submicron-sized phosphors based on hexagonal rare earth oxycarbonate for near-infrared excitation and emission M Watanabe, Y Sejima, R Oka, S Ida, T Masui Journal of Asian Ceramic Societies 7 (4), 502-508, 2019 | 3 | 2019 |
| Color Controllable Inorganic Pigments with Ce3+ as a Color Source K Yamaguchi, Y Shobu, R Oka, T Masui Inorganic Chemistry 62 (38), 15392-15402, 2023 | 2 | 2023 |
| Novel Findings on the Optical Properties of Mn4+‐Doped (Rb,K)2Ge4O9 Phosphors R Oka, D Nishi, T Hayakawa physica status solidi (b) 259 (9), 2100615, 2022 | 2 | 2022 |
| Synthesis and Color Evaluation of Tb4+-Doped Na2ZrO3 for Inorganic Yellow Pigments R Oka, T Nouchi, T Masui Colorants 1 (3), 347-353, 2022 | 2 | 2022 |
| Enhancement of near-infrared emission of neodymium-doped monoclinic gadolinium phosphate nanophosphors by surface coating with calcium phosphate M Watanabe, N Yamamoto, T Matsuo, R Oka, S Ida, T Masui Journal of Asian Ceramic Societies 7 (4), 509-517, 2019 | 2 | 2019 |
| Tuning the luminescence color of Eu3+-and alkali-ion-codoped Sr2CaWO6 orange-red phosphors: Eu3+ site distribution and site-selective photoluminescence studies T Otsuka, R Oka, MR Cicconi, D de Ligny, T Hayakawa APL Materials 12 (3), 2024 | 1 | 2024 |
