AI Article Synopsis
- The study focuses on improving the efficiency and stability of CHNHPbI perovskite films for solar cells by controlling nucleation through the addition of 4-tert-butylpyridine (tBP).
- tBP helps to suppress nucleation and forms an intermediate phase, resulting in high-quality perovskite layers as confirmed by in situ optical microscopy and X-ray diffraction patterns.
- The treated perovskite achieved a power conversion efficiency (PCE) of 17.41% and maintained over 89% of its initial PCE after 30 days at room temperature, indicating significant improvements in both efficiency and stability.
Article Abstract
The synthesis and growth of CHNHPbI films with controlled nucleation is a key issue for the high efficiency and stability of solar cells. Here, 4-tert-butylpyridine (tBP) was introduced into a CHNHPbI antisolvent to obtain high quality perovskite layers. In situ optical microscopy and X-ray diffraction patterns were used to prove that tBP significantly suppressed perovskite nucleation by forming an intermediate phase. In addition, a gradient perovskite structure was obtained by this method, which greatly improved the efficiency and stability of perovskites. An effective power conversion efficiency (PCE) of 17.41% was achieved via the tBP treatment, and the high-efficiency device could maintain over 89% of the initial PCE after 30 days at room temperature.
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| http://dx.doi.org/10.1021/acsami.7b16912 | DOI Listing |
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