R. Enomoto and Y. Murakami, “Absorption bandwidth broadening of photon upconversion solid-solution organic crystals by co-dissolution of multiple sensitizers,” Applied Physics Express, vol. 16, pp. 092001-1–092001-4, 2023.
DOI: 10.35848/1882-0786/acf6a7

Y. Murakami and R. Enomoto, “Stable and Low-Threshold Photon Upconversion in NonDegassed Water by Organic Crystals,” Frontiers in Chemistry, vol. 11, pp. 1217260-1–1217260-7, 2023.
DOI: 10.3389/fchem.2023.1217260

R. Enomoto and Y. Murakami, “Solvent-free temperature gradient melt formation of efficient visible-to-UV photon upconversion organic films with subsolar threshold and over 100 h photostability in air,” Journal of Materials Chemistry C, vol. 11, pp. 1678–1683, 2023.
DOI: 10.1039/D2TC04578H

R. Enomoto, M. Hoshi, H. Oyama, H. Agata, S. Kurokawa, H. Kuma, H. Uekusa, and Y. Murakami, “van der Waals Solid Solution Crystals for Highly Efficient In-air Photon Upconversion under Subsolar Irradiance,” Materials Horizons, vol. 8, pp. 3449–3456, 2021.
DOI: 10.1039/D1MH01542G

Y. Murakami and K. Kamada, “Kinetics of Photon Upconversion by Triplet-Triplet Annihilation: A Comprehensive Tutorial,” Physical Chemistry Chemical Physics, vol. 23, pp. 18268–18282, 2021.
DOI: 10.1039/D1CP02654B

村上 陽一，”可視光を紫外光に変換する光アップコンバージョン”（査読付レビュー論文）, 光化学/Photochemistry, vol. 51, pp. 138–145, 2020.

Y. Murakami, A. Motooka, R. Enomoto, K. Niimi, A. Kaiho, and N. Kiyoyanagi, “Visible-to-Ultraviolet (
DOI: 10.1039/D0CP04923A

村上 陽一，”三重項-三重項消滅を用いた光アップコンバージョン： イオン液体を溶媒とした試料の開発，特長，および光物理特性”（査読付展望解説論文）, 放射線化学, no. 107, pp. 27–34, 2019.

Y. Murakami, A. Motooka, K. Niimi, A. Kaiho, and N. Kiyoyanagi, “Photon upconversion using intermolecular energy transfer for increasing sunlight utilization efficiency: The developments of visible-to-visible and visible-to-UV conversion materials,” Proceedings of The Second Pacific Rim Thermal Engineering Conference (PRTEC2019), Paper#: PRTEC-24289, 5 pages, 2019.

Y. Murakami, “Photon Upconversion based on Molecular Scale Energy and Mass Transfer: Materials Development, Microscopic Kinetics, and Photophysical Properties,” Proceedings of the 16th International Heat Transfer Conference (IHTC-16), IHTC16-24412, pp. 6135-6142, 2018.
DOI: 10.1615/IHTC16.mpe.024412

Y. Murakami, S. K. Das, Y. Himuro, and S. Maeda, “Triplet-Sensitized Photon Upconversion in Deep Eutectic Solvents,” Physical Chemistry Chemical Physics, vol. 19, pp. 30603–30615, 2017.
DOI: 10.1039/C7CP06494B

Y. Murakami, Y. Himuro, T. Ito, R. Morita, K. Niimi, and N. Kiyoyanagi, “Transparent and Nonflammable Ionogel Photon Upconverters and Their Solute Transport Properties,” Journal of Physical Chemistry B, vol. 120, pp. 748–755, 2016.
DOI: 10.1021/acs.jpcb.5b09880

Y. Murakami, T. Ito, and A. Kawai, “Photon upconversion based on intermolecular energy transfers in ionic liquids: Kinetics of triplet-triplet annihilation upon formation of a molecular encounter-complex pair,” Proceedings of the First Pacific Rim Thermal Engineering Conference (PRTEC2016), PRTEC-14560, 5 pages, 2016.

Y. Murakami, T. Ito, and A. Kawai, “Ionic Liquid Dependence of Triplet-Sensitized Photon Upconversion,” Journal of Physical Chemistry B, vol. 118, pp. 14442–14451, 2014.
DOI: 10.1021/jp508901d

Y. Murakami and A. Kawai, “Photon Upconversion Based on Inter-Molecular Energy Transfer in Ionic Liquids: A Technology for Utilizing Sub-Bandgap Wasted Solar Energies,” Proceedings of the 15th International Heat Transfer Conference (IHTC-15), IHTC15-8514, pp. 4999-5009, 2014.
DOI: 10.1615/IHTC15.mlt.008514

Y. Murakami, H. Kikuchi, and A. Kawai, “Kinetics of Photon Upconversion in Ionic Liquids: Time-Resolved Analysis of Delayed Fluorescence,” Journal of Physical Chemistry B, vol. 117, pp. 5180–5187, 2013.
DOI: 10.1021/jp401474n

Y. Murakami, H. Kikuchi, and A. Kawai, “Kinetics of Photon Upconversion in Ionic Liquids: Energy Transfer between Sensitizer and Emitter Molecules,” Journal of Physical Chemistry B, vol. 117, pp. 2487–2494, 2013.
DOI: 10.1021/jp3124082

村上 陽一，”太陽光高効率利用に向けた相安定な光アップコンバーターの開発”, Thermal Science and Engineering, vol. 20, pp. 15–26, 2012.
DOI: 10.11368/tse.20.15

Y. Murakami, “Phase-Stable Photochemical Photon Upconverters Based on Ionic Liquids for Efficient Solar Energy Utilization,” Proceedings of the 243rd American Chemical Society National Meeting, Division of Fuel Chemistry, vol. 57, pp. 15–19, 2012.

Y. Murakami, “Photochemical Photon Upconverters with Ionic Liquids,” Chemical Physics Letters, vol. 516, pp. 56–61, 2011.
DOI: 10.1016/j.cplett.2011.09.065