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Electro-optical characterization of arsenic-doped CdSeTe and CdTe solar cell absorbers doped in-situ during close space sublimation

https://doi.org/10.1016/j.solmat.2022.112110

Danielson, Adam; Reich, Carey; Pandey, Ramesh; Munshi, Amit; Onno, Arthur; Weigand, Will; Kuciauskas, Darius; Li, Siming; Bothwell, Alexandra; Guo, Jinglong; et al (March 2023, Solar Energy Materials and Solar Cells)

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Understanding what limits the voltage of polycrystalline CdSeTe solar cells

https://doi.org/10.1038/s41560-022-00985-z

Onno, Arthur; Reich, Carey; Li, Siming; Danielson, Adam; Weigand, William; Bothwell, Alexandra; Grover, Sachit; Bailey, Jeff; Xiong, Gang; Kuciauskas, Darius; et al (May 2022, Nature Energy)

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Comparative evaluation of lead emissions and toxicity potential in the life cycle of lead halide perovskite photovoltaics

https://doi.org/10.1016/j.energy.2018.10.141

Billen, Pieter; Leccisi, Enrica; Dastidar, Subham; Li, Siming; Lobaton, Liliana; Spatari, Sabrina; Fafarman, Aaron T.; Fthenakis, Vasilis M.; Baxter, Jason B. (January 2019, Energy)

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Measurement of Carrier Dynamics in Photovoltaic CZTSe by Time-Resolved Terahertz Spectroscopy

Li, Siming; Lloyd, Michael A.; Golembeski, Andrew A.; McCandless, Brian E.; Baxter, Jason B. (January 2018, Conference record of the IEEE Photovoltaic Specialists Conference)

We demonstrate the use of time-resolved terahertz spectroscopy coupled with numerical modeling of the transport equations to elucidate photoexcited carrier dynamics in a photovoltaic absorber. By measuring a high-quality Cu2ZnSnSe4 single crystal that exhibited device efficiency of 8.6%, we show that critical parameters including mobility, surface recombination velocity, and Shockley-Read-Hall lifetime can be obtained. Mobility values of 80 cm2/Vs were validated with Hall effect measurements. Surface recombination velocity could be reduced by at least two orders of magnitude, to 10^4 cm/s, with appropriate chemical and mechanical polishing. Carrier lifetimes exceeding 10 ns indicate promise for devices with high photovoltage. Terahertz spectroscopy provides complementary insight to conventional time-resolved photoluminescence and is particularly valuable for materials that are not strongly emissive.
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Slow Electron–Hole Recombination in Lead Iodide Perovskites Does Not Require a Molecular Dipole

https://doi.org/10.1021/acsenergylett.7b00606

Dastidar, Subham; Li, Siming; Smolin, Sergey Y.; Baxter, Jason B.; Fafarman, Aaron T. (October 2017, ACS Energy Letters)

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Solution processed CuSbS 2 films for solar cell applications

https://doi.org/10.1016/j.tsf.2017.12.002

Edley, Michael E.; Opasanont, Borirak; Conley, Jason T.; Tran, Hoang; Smolin, Sergey Y.; Li, Siming; Dillon, Andrew D.; Fafarman, Aaron T.; Baxter, Jason B. (January 2018, Thin Solid Films)

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Nanosecond carrier lifetimes in solution-processed enargite (Cu ₃ AsS ₄ ) thin films

https://doi.org/10.1063/5.0023246

McClary, Scott A.; Taheri, Mohammad M.; Blach, Daria D.; Pradhan, Apurva A.; Li, Siming; Huang, Libai; Baxter, Jason B.; Agrawal, Rakesh (October 2020, Applied Physics Letters)

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