Long-range balanced electron- and hole-transport lengths in organic-inorganic CH3NH3PbI3
Low-temperature solution-processed photovoltaics suffer from low efficiencies because of poor exciton or electron-hole diffusion lengths (typically about 10 nanometers). Recent reports of highly efficient CH3NH3PbI3-based solar cells in a broad range of configurations raise a compelling case for und...
| Main Authors: | , , , , , , , |
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| Format: | Journal Article |
| Language: | English |
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2013
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/105166 http://hdl.handle.net/10220/16761 |
| _version_ | 1826125593478955008 |
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| author | Xing, Guichuan Mathews, Nripan Sun, Shuangyong Lim, Swee Sien Lam, Yeng Ming Grätzel, Michael Mhaisalkar, Subodh Gautam Sum, Tze Chien |
| author2 | School of Materials Science & Engineering |
| author_facet | School of Materials Science & Engineering Xing, Guichuan Mathews, Nripan Sun, Shuangyong Lim, Swee Sien Lam, Yeng Ming Grätzel, Michael Mhaisalkar, Subodh Gautam Sum, Tze Chien |
| author_sort | Xing, Guichuan |
| collection | NTU |
| description | Low-temperature solution-processed photovoltaics suffer from low efficiencies because of poor exciton or electron-hole diffusion lengths (typically about 10 nanometers). Recent reports of highly efficient CH3NH3PbI3-based solar cells in a broad range of configurations raise a compelling case for understanding the fundamental photophysical mechanisms in these materials. By applying femtosecond transient optical spectroscopy to bilayers that interface this perovskite with either selective-electron or selective-hole extraction materials, we have uncovered concrete evidence of balanced long-range electron-hole diffusion lengths of at least 100 nanometers in solution-processed CH3NH3PbI3. The high photoconversion efficiencies of these systems stem from the comparable optical absorption length and charge-carrier diffusion lengths, transcending the traditional constraints of solution-processed semiconductors. |
| first_indexed | 2024-10-01T06:38:53Z |
| format | Journal Article |
| id | ntu-10356/105166 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:38:53Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | ntu-10356/1051662023-07-14T15:56:08Z Long-range balanced electron- and hole-transport lengths in organic-inorganic CH3NH3PbI3 Xing, Guichuan Mathews, Nripan Sun, Shuangyong Lim, Swee Sien Lam, Yeng Ming Grätzel, Michael Mhaisalkar, Subodh Gautam Sum, Tze Chien School of Materials Science & Engineering School of Physical and Mathematical Sciences DRNTU::Engineering::Materials DRNTU::Science Low-temperature solution-processed photovoltaics suffer from low efficiencies because of poor exciton or electron-hole diffusion lengths (typically about 10 nanometers). Recent reports of highly efficient CH3NH3PbI3-based solar cells in a broad range of configurations raise a compelling case for understanding the fundamental photophysical mechanisms in these materials. By applying femtosecond transient optical spectroscopy to bilayers that interface this perovskite with either selective-electron or selective-hole extraction materials, we have uncovered concrete evidence of balanced long-range electron-hole diffusion lengths of at least 100 nanometers in solution-processed CH3NH3PbI3. The high photoconversion efficiencies of these systems stem from the comparable optical absorption length and charge-carrier diffusion lengths, transcending the traditional constraints of solution-processed semiconductors. Accepted version 2013-10-24T05:54:24Z 2019-12-06T21:46:54Z 2013-10-24T05:54:24Z 2019-12-06T21:46:54Z 2013 2013 Journal Article Xing, G., Mathews, N., Sun, S., Lim, S. S., Lam, Y. M., Grätzel, M., Mhaisalkar, S., & Sum, T. C. (2013). Long-range balanced electron- and hole-transport lengths in organic-inorganic CH3NH3PbI3. Science, 342(6156), 344-347. 1095-9203 https://hdl.handle.net/10356/105166 http://hdl.handle.net/10220/16761 10.1126/science.1243167 174617 en Science © 2013 American Association for the Advancement of Science. This is the author created version of a work that has been peer reviewed and accepted for publication by Science, American Association for the Advancement of Science. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at DOI: [http://dx.doi.org/10.1126/science.1243167]. application/pdf |
| spellingShingle | DRNTU::Engineering::Materials DRNTU::Science Xing, Guichuan Mathews, Nripan Sun, Shuangyong Lim, Swee Sien Lam, Yeng Ming Grätzel, Michael Mhaisalkar, Subodh Gautam Sum, Tze Chien Long-range balanced electron- and hole-transport lengths in organic-inorganic CH3NH3PbI3 |
| title | Long-range balanced electron- and hole-transport lengths in organic-inorganic CH3NH3PbI3 |
| title_full | Long-range balanced electron- and hole-transport lengths in organic-inorganic CH3NH3PbI3 |
| title_fullStr | Long-range balanced electron- and hole-transport lengths in organic-inorganic CH3NH3PbI3 |
| title_full_unstemmed | Long-range balanced electron- and hole-transport lengths in organic-inorganic CH3NH3PbI3 |
| title_short | Long-range balanced electron- and hole-transport lengths in organic-inorganic CH3NH3PbI3 |
| title_sort | long range balanced electron and hole transport lengths in organic inorganic ch3nh3pbi3 |
| topic | DRNTU::Engineering::Materials DRNTU::Science |
| url | https://hdl.handle.net/10356/105166 http://hdl.handle.net/10220/16761 |
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