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Solar Cells
In article number 2108090, Gang Wang, Hao‐Li Zhang, Zhiwen Jin, and co‐workers propose a C3N quantum dots insertion method to effectively adsorb bulky organic cations, and provide nucleation sites to realize gradient distribution of solute in 2D CsPbI3 film to obtain a bi‐directional crystallization process. Importantly, the optimized 2D CsPbI3 film‐based device delivers a high power conversion...
Two‐dimensional (2D) CsPbI3 is developed to conquer the phase‐stability problem of CsPbI3 by introducing bulky organic cations to produce a steric hindrance effect. However, organic cations also inevitably increase the formation energy and difficulty in crystallization kinetics regulation. Such poor crystallization process modulation of 2D CsPbI3 leads to disordered phase‐arrangement, which impedes...
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