Electrical field profile and doping in planar lead halide perovskite solar cells
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Other documents of the author: Guerrero, Antonio; Juarez-Perez, Emilio J.; Bisquert, Juan; Mora-Sero, Ivan; Garcia-Belmonte, Germà
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Electrical field profile and doping in planar lead halide perovskite solar cellsAuthor (s)
Date
2014-09-29Publisher
AIP PublishingBibliographic citation
GUERRERO CASTILLEJO, A.; JUÁREZ PÉREZ, E. J.; BISQUERT, J.; MORA SERÓ, I.; GARCÍA BELMONTE, G. Electrical field profile and doping in planar lead halide perovskite solar cells. Applied Physics Letters, v. 105, n. 13 (2014), p. 1-5Type
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Abstract
Hybrid lead halide perovskites (PVKs) have emerged as novel materials for photovoltaics and have rapidly reached very large solar to electricity power conversion efficiencies. As occurring with other kind of solar ... [+]
Hybrid lead halide perovskites (PVKs) have emerged as novel materials for photovoltaics and have rapidly reached very large solar to electricity power conversion efficiencies. As occurring with other kind of solar technologies establishing the working energy-band diagram constitutes a primary goal for device physics analysis. Here, the macroscopic electrical field distribution is experimentally determined using capacitance-voltage and Kelvin probe techniques. Planar struc- tures comprising CH3NH3PbI3�����xClx PVK exhibit p-doping character and form a p-n heterojunc- tion with n-doped TiO2 compact layers. Depletion width at equilibrium within the PVK bulk has an extent about 300 nm (approximately half of the layer thickness), leaving as a consequence a significant neutral zone towards the anode contact. Charge collection properties are then accessi- ble relying on the relative weight that diffusion and drift have as carrier transport driven forces. [-]
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Applied Physics Letters, v. 105, n. 13 (2014)Rights
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