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- W2575339947 abstract "The newly discovered photovoltaic hybrid perovskite materials have been suggested for thermoelectric applications as they possess very low thermal conductivity and large Seebeck coefficient. However, to achieve a high figure of merit, chemical doping is necessary to increase the electrical conductivity. In the present work, we examined the thermoelectric figure of merit for CH3NH3PbI3 as a function of carrier concentration based on first-principles calculations. For doped semiconductors, the impurity scattering usually plays a dominant role in the charge transport. Both impurity scattering and acoustic phonon scattering have been incorporated in our calculations. We showed that at the impurity concentration of 1018 cm−3, the room temperature zT value of tetragonal CH3NH3PbI3 could be optimized to reach unity at the carrier concentration on the same order of magnitude as 1018 cm−3. The hole-doped CH3NH3PbI3 exhibits superior thermoelectric property than the electron-doped one, and we propose to engineer the vacancies of organic cations for the enhanced hole concentration and thermoelectric efficiency." @default.
- W2575339947 created "2017-01-26" @default.
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- W2575339947 date "2017-03-01" @default.
- W2575339947 modified "2023-10-18" @default.
- W2575339947 title "Doping optimization of organic-inorganic hybrid perovskite CH 3 NH 3 PbI 3 for high thermoelectric efficiency" @default.
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- W2575339947 doi "https://doi.org/10.1016/j.synthmet.2017.01.003" @default.
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