Enhanced charge carrier lifetime and mobility as a result of Rb and Cs incorporation in hybrid perovskite
© 2021 Author(s). Alkali addition in organic-inorganic perovskite has become the standard recipe for achieving solar cells with efficiencies exceeding 20%, but the mechanism is not well understood. We use non-contact carrier lifetime measurements, mobility measurements, and synchrotron-based X-ray c...
| Main Authors: | , , , , , , , |
|---|---|
| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing
2023
|
| Online Access: | https://hdl.handle.net/1721.1/150814 |
| _version_ | 1826215505361371136 |
|---|---|
| author | Erodici, Matthew P Pierone, Polly J Hartono, Noor Titan Putri Hidalgo, Juanita Lai, Barry Buonassisi, Tonio Correa-Baena, Juan-Pablo Sher, Meng-Ju |
| author2 | Massachusetts Institute of Technology. Department of Mechanical Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Mechanical Engineering Erodici, Matthew P Pierone, Polly J Hartono, Noor Titan Putri Hidalgo, Juanita Lai, Barry Buonassisi, Tonio Correa-Baena, Juan-Pablo Sher, Meng-Ju |
| author_sort | Erodici, Matthew P |
| collection | MIT |
| description | © 2021 Author(s). Alkali addition in organic-inorganic perovskite has become the standard recipe for achieving solar cells with efficiencies exceeding 20%, but the mechanism is not well understood. We use non-contact carrier lifetime measurements, mobility measurements, and synchrotron-based X-ray characterization techniques to show that there is a unique benefit to adding hybrid perovskite samples with Rb and Cs simultaneously. When either Rb or Cs is added, charge carrier mobility increases with alkali concentration. Charge carrier lifetime benefits from alkali incorporation as well, but is optimized with only moderate concentration at 1%. When both Rb and Cs are introduced, however, the high mobility is maintained and the charge carrier lifetime increases considerably. Our results show that when incorporated alone, Rb and Cs have very similar roles in a perovskite crystal, but when co-added, halide distribution becomes homogenized correlating with improved charge transport properties. |
| first_indexed | 2024-09-23T16:32:17Z |
| format | Article |
| id | mit-1721.1/150814 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T16:32:17Z |
| publishDate | 2023 |
| publisher | AIP Publishing |
| record_format | dspace |
| spelling | mit-1721.1/1508142023-05-26T03:01:46Z Enhanced charge carrier lifetime and mobility as a result of Rb and Cs incorporation in hybrid perovskite Erodici, Matthew P Pierone, Polly J Hartono, Noor Titan Putri Hidalgo, Juanita Lai, Barry Buonassisi, Tonio Correa-Baena, Juan-Pablo Sher, Meng-Ju Massachusetts Institute of Technology. Department of Mechanical Engineering © 2021 Author(s). Alkali addition in organic-inorganic perovskite has become the standard recipe for achieving solar cells with efficiencies exceeding 20%, but the mechanism is not well understood. We use non-contact carrier lifetime measurements, mobility measurements, and synchrotron-based X-ray characterization techniques to show that there is a unique benefit to adding hybrid perovskite samples with Rb and Cs simultaneously. When either Rb or Cs is added, charge carrier mobility increases with alkali concentration. Charge carrier lifetime benefits from alkali incorporation as well, but is optimized with only moderate concentration at 1%. When both Rb and Cs are introduced, however, the high mobility is maintained and the charge carrier lifetime increases considerably. Our results show that when incorporated alone, Rb and Cs have very similar roles in a perovskite crystal, but when co-added, halide distribution becomes homogenized correlating with improved charge transport properties. 2023-05-25T15:50:58Z 2023-05-25T15:50:58Z 2021 2023-05-25T15:48:04Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/150814 Erodici, Matthew P, Pierone, Polly J, Hartono, Noor Titan Putri, Hidalgo, Juanita, Lai, Barry et al. 2021. "Enhanced charge carrier lifetime and mobility as a result of Rb and Cs incorporation in hybrid perovskite." Applied Physics Letters, 118 (6). en 10.1063/5.0030206 Applied Physics Letters Creative Commons Attribution-Noncommercial-Share Alike https://creativecommons.org/licenses/by-nc-sa/4.0/ application/pdf AIP Publishing AIP |
| spellingShingle | Erodici, Matthew P Pierone, Polly J Hartono, Noor Titan Putri Hidalgo, Juanita Lai, Barry Buonassisi, Tonio Correa-Baena, Juan-Pablo Sher, Meng-Ju Enhanced charge carrier lifetime and mobility as a result of Rb and Cs incorporation in hybrid perovskite |
| title | Enhanced charge carrier lifetime and mobility as a result of Rb and Cs incorporation in hybrid perovskite |
| title_full | Enhanced charge carrier lifetime and mobility as a result of Rb and Cs incorporation in hybrid perovskite |
| title_fullStr | Enhanced charge carrier lifetime and mobility as a result of Rb and Cs incorporation in hybrid perovskite |
| title_full_unstemmed | Enhanced charge carrier lifetime and mobility as a result of Rb and Cs incorporation in hybrid perovskite |
| title_short | Enhanced charge carrier lifetime and mobility as a result of Rb and Cs incorporation in hybrid perovskite |
| title_sort | enhanced charge carrier lifetime and mobility as a result of rb and cs incorporation in hybrid perovskite |
| url | https://hdl.handle.net/1721.1/150814 |
| work_keys_str_mv | AT erodicimatthewp enhancedchargecarrierlifetimeandmobilityasaresultofrbandcsincorporationinhybridperovskite AT pieronepollyj enhancedchargecarrierlifetimeandmobilityasaresultofrbandcsincorporationinhybridperovskite AT hartononoortitanputri enhancedchargecarrierlifetimeandmobilityasaresultofrbandcsincorporationinhybridperovskite AT hidalgojuanita enhancedchargecarrierlifetimeandmobilityasaresultofrbandcsincorporationinhybridperovskite AT laibarry enhancedchargecarrierlifetimeandmobilityasaresultofrbandcsincorporationinhybridperovskite AT buonassisitonio enhancedchargecarrierlifetimeandmobilityasaresultofrbandcsincorporationinhybridperovskite AT correabaenajuanpablo enhancedchargecarrierlifetimeandmobilityasaresultofrbandcsincorporationinhybridperovskite AT shermengju enhancedchargecarrierlifetimeandmobilityasaresultofrbandcsincorporationinhybridperovskite |