%0 Journal Article %1 AENM:AENM201602349 %A Hutter, Eline M. %A Hofman, Jan-Jaap %A Petrus, Michiel L. %A Moes, Michiel %A Abellón, Ruben D. %A Docampo, Pablo %A Savenije, Tom J. %D 2017 %J Advanced Energy Materials %K mobility perovskite theoretic %P n/a--n/a %R 10.1002/aenm.201602349 %T Charge Transfer from Methylammonium Lead Iodide Perovskite to Organic Transport Materials: Efficiencies, Transfer Rates, and Interfacial Recombination %U http://dx.doi.org/10.1002/aenm.201602349 %X Perovskite-based photovoltaics have been rapidly developed, with record power conversion efficiencies now exceeding 22%. In order to rationally design efficient and stable perovskite solar cells, it is important to understand not only charge trapping and recombination events, but also processes occurring at the perovskite/transport material (TM) interface, such as charge transfer and interfacial recombination. In this work, time-resolved microwave conductivity measurements are performed to investigate these interfacial processes for methylammonium lead iodide and various state-of-the-art organic TMs. A global kinetic model is developed, which accurately describes both the dynamics of excess charges in the perovskite layer and transfer to charge-specific TMs. The authors conclude that for state-of-the-art materials, such as Spiro-OMeTAD and PCBM, the charge extraction efficiency is not significantly affected by intra-band gap traps for trap densities under 1015 cm–3. Finally, the transfer rates to C60, PCBM, EDOT-OMeTPA, and Spiro-OMeTAD are sufficient to outcompete second order recombination under excitation densities representative for illumination by AM1.5.

@article{AENM:AENM201602349, abstract = {Perovskite-based photovoltaics have been rapidly developed, with record power conversion efficiencies now exceeding 22%. In order to rationally design efficient and stable perovskite solar cells, it is important to understand not only charge trapping and recombination events, but also processes occurring at the perovskite/transport material (TM) interface, such as charge transfer and interfacial recombination. In this work, time-resolved microwave conductivity measurements are performed to investigate these interfacial processes for methylammonium lead iodide and various state-of-the-art organic TMs. A global kinetic model is developed, which accurately describes both the dynamics of excess charges in the perovskite layer and transfer to charge-specific TMs. The authors conclude that for state-of-the-art materials, such as Spiro-OMeTAD and PCBM, the charge extraction efficiency is not significantly affected by intra-band gap traps for trap densities under 1015 cm–3. Finally, the transfer rates to C60, PCBM, EDOT-OMeTPA, and Spiro-OMeTAD are sufficient to outcompete second order recombination under excitation densities representative for illumination by AM1.5.}, added-at = {2017-02-27T15:57:55.000+0100}, author = {Hutter, Eline M. and Hofman, Jan-Jaap and Petrus, Michiel L. and Moes, Michiel and Abellón, Ruben D. and Docampo, Pablo and Savenije, Tom J.}, biburl = {https://www.bibsonomy.org/bibtex/29e311671a1f7d989bf2ff99d9f3a4ad2/bretschneider_m}, description = {Charge Transfer from Methylammonium Lead Iodide Perovskite to Organic Transport Materials: Efficiencies, Transfer Rates, and Interfacial Recombination - Hutter - 2017 - Advanced Energy Materials - Wiley Online Library}, doi = {10.1002/aenm.201602349}, interhash = {7b0f060f3394fb4ba72a9031316d6979}, intrahash = {9e311671a1f7d989bf2ff99d9f3a4ad2}, issn = {1614-6840}, journal = {Advanced Energy Materials}, keywords = {mobility perovskite theoretic}, pages = {n/a--n/a}, timestamp = {2017-02-27T15:57:55.000+0100}, title = {Charge Transfer from Methylammonium Lead Iodide Perovskite to Organic Transport Materials: Efficiencies, Transfer Rates, and Interfacial Recombination}, url = {http://dx.doi.org/10.1002/aenm.201602349}, year = 2017 }