Výsledky vyhledávání - "Bowman, Alan R"

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Distinguishing Inner and Outer-Sphere Hot Electron Transfer in Au/p-GaN Photocathodes

Autor: Kiani, Fatemeh, Bowman, Alan R., Sabzehparvar, Milad, Sundararaman, Ravishankar, Tagliabue, Giulia

Exploring nonequilibrium hot carriers from plasmonic metal nanostructures is a dynamic field in optoelectronics, driving photochemical reactions such as solar fuel generation. The hot carrier injection mechanism and the reaction rate are highly impac

Externí odkaz: http://arxiv.org/abs/2407.10808

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Spatially resolved photoluminescence analysis of Se passivation and defect formation in CdSe$_{x}$Te$_{1-x}$ thin films

Autor: Bowman, Alan R, Leaver, Jacob J, Frohna, Kyle, Stranks, Samuel D, Tagliabue, Giulia, Major, Jon D

CdTe is the most commercially successful thin-film photovoltaic technology to date. The recent development of Se-alloyed CdSe$_{x}$Te$_{1-x}$ layers in CdTe solar cells has led to higher device efficiencies, due to a lowered bandgap improving the pho

Externí odkaz: http://arxiv.org/abs/2310.06496

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Interfacial Hot Carrier Collection Controls Plasmonic Chemistry

Autor: Kiani, Fatemeh, Bowman, Alan R., Sabzehparvar, Milad, Karaman, Can O., Sundararaman, Ravishankar, Tagliabue, Giulia

Publikováno v: ACS Energy Lett. 2023, 8, 10, 4242-4250

Harnessing non-equilibrium hot carriers from plasmonic metal nanostructures constitutes a vibrant research field. It promises to enable control of activity and selectivity of photochemical reactions, especially for solar fuel generation. However, a c

Externí odkaz: http://arxiv.org/abs/2307.09324

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Quantum-mechanical effects in photoluminescence from thin crystalline gold films

Autor: Bowman, Alan R., Echarri, Álvaro Rodríguez, Kiani, Fatemeh, Iyikanat, Fadil, Tsoulos, Ted V., Cox, Joel D., Sundararaman, Ravishankar, de Abajo, F. Javier García, Tagliabue, Giulia

Publikováno v: Light. Sci. Appl. 13, 91 (2024)

Luminescence constitutes a unique source of insight into hot carrier processes in metals, including those in plasmonic nanostructures used for sensing and energy applications. However, being weak in nature, metal luminescence remains poorly understoo

Externí odkaz: http://arxiv.org/abs/2307.08477

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A study of singlet fission-halide perovskite interfaces

Autor: Bowman, Alan R., Stranks, Samuel D., Monserrat, Bartomeu

A method for improving the efficiency of solar cells is combining a low-bandgap semiconductor with a singlet fission material (which converts one high energy singlet into two low energy triplets following photoexcitation). Here we present a study of

Externí odkaz: http://arxiv.org/abs/2112.03078

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Relaxed current matching requirements in highly luminescent perovskite tandem solar cells and their fundamental efficiency limits

Autor: Bowman, Alan R., Lang, Felix, Chiang, Yu-Hsien, Jiménez-Solano, Alberto, Frohna, Kyle, Eperon, Giles E., Ruggeri, Edoardo, Abdi-Jalebi, Mojtaba, Anaya, Miguel, Lotsch, Bettina V., Stranks, Samuel D.

Here we use time-resolved and steady-state optical spectroscopy on state-of-the-art low- and high-bandgap perovskite films for tandems to quantify intrinsic recombination rates and absorption coefficients. We apply these data to calculate the limitin

Externí odkaz: http://arxiv.org/abs/2012.00624

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