Dynamic lattice distortions driven by surface trapping in semiconductor nanocrystals

Autor: Burak Guzelturk, Benjamin L. Cotts, Dipti Jasrasaria, John P. Philbin, David A. Hanifi, Brent A. Koscher, Arunima D. Balan, Ethan Curling, Marc Zajac, Suji Park, Nuri Yazdani, Clara Nyby, Vladislav Kamysbayev, Stefan Fischer, Zach Nett, Xiaozhe Shen, Michael E. Kozina, Ming-Fu Lin, Alexander H. Reid, Stephen P. Weathersby, Richard D. Schaller, Vanessa Wood, Xijie Wang, Jennifer A. Dionne, Dmitri V. Talapin, A. Paul Alivisatos, Alberto Salleo, Eran Rabani, Aaron M. Lindenberg

Publikováno v: Nature Communications, Vol 12, Iss 1, Pp 1-9 (2021)

Charge trapping can lead to severe nonradiative losses in colloidal semiconductor nanocrystals (NCs). The authors report femtosecond electron diffraction measurements on photoexcited NCs to reveal atomic-scale insights into how localization of charge

Externí odkaz: https://doaj.org/article/cde4023909da4210bdf52ef5225abe17

Dynamic lattice distortions driven by surface trapping in semiconductor nanocrystals

Autor: Ethan Curling, Stephen Weathersby, Jennifer A. Dionne, Stefan Fischer, Benjamin L. Cotts, Arunima D. Balan, A. Paul Alivisatos, Alexander H. Reid, John P. Philbin, Marc Zajac, Dipti Jasrasaria, David Hanifi, Burak Guzelturk, Vladislav Kamysbayev, Alberto Salleo, Ming-Fu Lin, Eran Rabani, Vanessa Wood, Michael Kozina, Dmitri V. Talapin, Nuri Yazdani, Xiaozhe Shen, Zach Nett, Brent A. Koscher, Xijie Wang, Aaron M. Lindenberg, Suji Park, Richard D. Schaller, Clara Nyby

Publikováno v: Nature communications, vol 12, iss 1
Nature Communications, Vol 12, Iss 1, Pp 1-9 (2021)
Nature Communications
Nature Communications, 12 (1)

Nonradiative processes limit optoelectronic functionality of nanocrystals and curb their device performance. Nevertheless, the dynamic structural origins of nonradiative relaxations in such materials are not understood. Here, femtosecond electron dif

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::72e4c5bb139c48c47d92c9927f81869a

Redefining near-unity luminescence in quantum dots with photothermal threshold quantum yield

Autor: A. Paul Alivisatos, Lorenzo Maserati, Adam M. Schwartzberg, Kaori Takano, Yoeri van de Burgt, Noah D. Bronstein, Koen Vandewal, Joseph K. Swabeck, Brent A. Koscher, Zach Nett, David Hanifi, Alberto Salleo

Publikováno v: Science (New York, N.Y.), vol 363, iss 6432
Hanifi, David A; Bronstein, Noah D; Koscher, Brent A; Nett, Zach; Swabeck, Joseph K; Takano, Kaori; et al.(2019). Redefining near-unity luminescence in quantum dots with photothermal threshold quantum yield.. Science (New York, N.Y.), 363(6432), 1199-1202. doi: 10.1126/science.aat3803. Lawrence Berkeley National Laboratory: Retrieved from: http://www.escholarship.org/uc/item/50b5j896
Science, 363(6432), 1199-1202. American Association for the Advancement of Science (AAAS)

A variety of optical applications rely on the absorption and reemission of light. The quantum yield of this process often plays an essential role. When the quantum yield deviates from unity by significantly less than 1%, applications such as luminesc

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::108b44950467e448435fd041ba2abc56
https://pubmed.ncbi.nlm.nih.gov/30872520

Micro-optical Tandem Luminescent Solar Concentrator

Autor: David R. Needell, Lu Xu, Junwen He, Ralph G. Nuzzo, Colton R. Bukowsky, Harry A. Atwater, Zach Nett, A. Paul Alivisatos, Benjamin G. Lee, John F. Geisz, Ognjen Ilic

Publikováno v: 2017 IEEE 44th Photovoltaic Specialist Conference (PVSC).

We propose a design for a concentrated photovoltaic (CPV) module with features that can capture both direct and diffuse sunlight. This approach uses a luminescent solar concentrator (LSC) sheet that includes quantum dots, and a tailored optical coati

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eebd7559aaa18e33105d7ee43a8e1f1f
https://doi.org/10.1109/pvsc.2017.8366508