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The origin of high efficiency in low-temperature solution-processable bilayer organometal halide hybrid solar cells
Open accessAbstract
This work reports a study into the origin of the high efficiency in solution-processable bilayer solar cells based on methylammonium lead iodide (CH3NH3PbI3) and [6,6]-phenyl-C61-butyric acid methyl ester (PC61BM). Our cell has a power conversion efficiency (PCE) of 5.2% under simulated AM 1.5G irradiation (100 mW cm−2) and an internal quantum efficiency of close to 100%, which means that nearly all the absorbed photons are converted to electrons and are efficiently collected at the electrodes. This implies that the exciton diffusion, charge transfer and charge collection are highly efficient. The high exciton diffusion efficiency is enabled by the long diffusion length of CH3NH3PbI3 relative to its thickness. Furthermore, the low exciton binding energy of CH3NH3PbI3 implies that exciton splitting at the CH3NH3PbI3/PC61BM interface is very efficient. With further increase in CH3NH3PbI3 thickness, a higher PCE of 7.4% could be obtained. This is the highest efficiency attained for low temperature solution-processable bilayer solar cells to date.
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Cited by
High-efficiency solution-processed perovskite solar cells with millimeter-scale grains
Nie, W., Tsai, H., Asadpour, R., Blancon, J.-C., Neukirch, A. J., Gupta, G., Crochet, J. J., Chhowalla, M., Tretiak, S., Alam, M. A., et al. (2015) · Science · doi:10.1126/science.aaa0472 · Cited by 3,295
Liang, P., Liao, C., Chueh, C., Zuo, F., Williams, S. T., Xin, X., Lin, J., & Jen, A. K. ‐. (2014) · Advanced Materials · doi:10.1002/adma.201400231 · Cited by 1,452
Low-Temperature Solution-Processed Perovskite Solar Cells with High Efficiency and Flexibility
You, J., Hong, Z., Yang, Y. (., Chen, Q., Cai, M., Song, T.-B., Chen, C.-C., Lu, S., Liu, Y., Zhou, H., et al. (2014) · ACS Nano · doi:10.1021/nn406020d · Cited by 1,448
A Review of Perovskites Solar Cell Stability
Wang, R., Mujahid, M., Duan, Y., Wang, Z., Xue, J., & Yang, Y. (2019) · Advanced Functional Materials · doi:10.1002/adfm.201808843 · Cited by 1,310
Charge-Carrier Dynamics in Organic-Inorganic Metal Halide Perovskites
Herz, L. M. (2016) · Annual Review of Physical Chemistry · doi:10.1146/annurev-physchem-040215-112222 · Cited by 819
Metadata
- Authors
- Sun, S., Salim, T., Mathews, N., Duchamp, M., Boothroyd, C., Xing, G., Sum, T. C., & Lam, Y. M.
- Venue
- Energy Environ. Sci.
- Publisher
- Royal Society of Chemistry (RSC)
- Published
- 2014
- Volume
- 7
- Issue
- 1
- Pages
- 399-407
- ISSN
- 1754-5692 (ISSN-L)
- 1754-5706
- OpenAlex
- W2120185412
- Cited by
- 1,109
- References
- 0
- FWCI
- 65.70
- Type
- journal article
- Language
- en
- Open access
- hybrid
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- Sun, S., Salim, T., Mathews, N., Duchamp, M., Boothroyd, C., Xing, G., Sum, T. C., & Lam, Y. M. (2014). The origin of high efficiency in low-temperature solution-processable bilayer organometal halide hybrid solar cells. Energy Environ. Sci. https://doi.org/10.1039/c3ee43161d
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