{"id":863,"date":"2025-05-22T22:51:35","date_gmt":"2025-05-22T22:51:35","guid":{"rendered":"https:\/\/seegroup.mit.edu\/?page_id=863"},"modified":"2025-06-07T20:09:20","modified_gmt":"2025-06-07T20:09:20","slug":"photon-upconversion-and-downconversion","status":"publish","type":"page","link":"https:\/\/seegroup.mit.edu\/index.php\/research\/photon-upconversion-and-downconversion\/","title":{"rendered":"Photon Upconversion and Downconversion"},"content":{"rendered":"

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Research: Photon Upconversion and Downconversion<\/strong><\/h3>\n

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Main Research Areas<\/p>\n

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Solar Cells<\/a><\/p>\n

Light Emitting Devices<\/a><\/p>\n

Gas Sensing<\/a><\/a><\/p>\n

Spintronics for Computation<\/a><\/p>\n

Photon Upconversion and Downconversion<\/a><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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High efficiency photon upconversion and downconversion has the potential to revolutionize solar energy capture, photocatalysis, bioimaging, 3D printing, and low power lighting. Through leveraging electronic spin in molecular materials, triplet fusion and singlet fission present a platform for high efficiency and low power upconversion and downconversion.<\/p>\n

Our focus lies in optimizing molecular materials for triplet fusion and singlet fission, and implementing these materials in state of the art devices. Previous work includes the first demostration of triplet fusion in a metal-organic framework, the development of high efficiency infrared to visible upconversion devices, and investigations into the diffusion and spin dynamics of these processes in a variety of systems.<\/p>\n

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Relevant Publications<\/span>:<\/p>\n

1\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Ha, DG., Wan, R., Kim, C.A.\u00a0<\/span>et al.<\/i>\u00a0Exchange controlled triplet fusion in metal\u2013organic frameworks.\u00a0<\/span>Nat. Mater.<\/i>\u00a0<\/span>21<\/b>, 1275\u20131281 (2022). <\/span>https:\/\/doi.org\/10.1038\/s41563-022-01368-1<\/span><\/span><\/span><\/p>\n

2\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Nanocrystal-Sensitized Infrared-to-Visible Upconversion in a Microcavity under Subsolar Flux. Mengfei Wu, Ting-An Lin, Jan O. Tiepelt, Vladimir Bulovi\u0107, and Marc A. Baldo. Nano Letters 2021 21 (2), 1011-1016<\/p>\n

3\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 A Heterogeneous Kinetics Model for Triplet Exciton Transfer in Solid-State Upconversion. Nadav Geva, Lea Nienhaus, Mengfei Wu, Vladimir Bulovi\u0107, Marc A. Baldo, Troy Van Voorhis, and Moungi G. Bawendi. The Journal of Physical Chemistry Letters 2019 10 (11), 3147-3152. DOI: 10.1021\/acs.jpclett.9b01058<\/p>\n

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Research: Photon Upconversion and DownconversionMain Research Areas Solar Cells Light Emitting Devices Gas Sensing Spintronics for Computation Photon Upconversion and Downconversion High efficiency photon upconversion and downconversion has the potential to revolutionize solar energy capture, photocatalysis, bioimaging, 3D printing, and low power lighting. Through leveraging electronic spin in molecular materials, triplet fusion and singlet fission […]<\/p>\n","protected":false},"author":5,"featured_media":0,"parent":100,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"class_list":["post-863","page","type-page","status-publish","hentry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/seegroup.mit.edu\/index.php\/wp-json\/wp\/v2\/pages\/863","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/seegroup.mit.edu\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/seegroup.mit.edu\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/seegroup.mit.edu\/index.php\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/seegroup.mit.edu\/index.php\/wp-json\/wp\/v2\/comments?post=863"}],"version-history":[{"count":7,"href":"https:\/\/seegroup.mit.edu\/index.php\/wp-json\/wp\/v2\/pages\/863\/revisions"}],"predecessor-version":[{"id":964,"href":"https:\/\/seegroup.mit.edu\/index.php\/wp-json\/wp\/v2\/pages\/863\/revisions\/964"}],"up":[{"embeddable":true,"href":"https:\/\/seegroup.mit.edu\/index.php\/wp-json\/wp\/v2\/pages\/100"}],"wp:attachment":[{"href":"https:\/\/seegroup.mit.edu\/index.php\/wp-json\/wp\/v2\/media?parent=863"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}