Controlled dion-jacobson low-dimensional surface phase enables highly efficient and stable perovskite solar cells

Wang, Haoliang; Deng, Liangliang; Hu, Tianxiang; Zhang, Xin; Li, Xiaoguo; Wang, Yanyan; Wang, Yaxin; Liu, Yiting; Yue, Xiaofei; Shi, Zejiao; Li, Chongyuan; Liu, Kai; Sailai, Momin; Liang, Zhenye; Tian, Chen; Wang, Jiao; Zhang, Jia; Yu, Anran; Zhang, Xiaolei; Dong, Hongliang; Yang, Yingguo; Zhan, Yiqiang

doi:10.1016/j.nanoen.2024.109875

Nano Energy

2024

DOI: 10.1016/j.nanoen.2024.109875

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Controlled dion-jacobson low-dimensional surface phase enables highly efficient and stable perovskite solar cells

Haoliang Wang,

Liangliang Deng,

Tianxiang Hu

et al.

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Space-Charge-Limited Current Measurements: A Problematic Technique for Metal Halide Perovskites

Le Corre

2024

J. Phys. Chem. Lett.

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Space-charge-limited current (SCLC) measurements play a crucial role in the electrical characterization of semiconductors, particularly for metal halide perovskites. Accurate reporting and analysis of SCLC are essential for gaining meaningful insights into charge transport and defect density in these systems. Unfortunately, performing SCLC measurements on perovskites is complicated by their mixed electronic-ionic conductivity. This complexity led to SCLC data often being incorrectly analyzed using simplified models unsuitable for these materials and reported without essential information about how the measurements were performed. In light of recently published SCLC data, common challenges in using SCLC measurements on perovskite materials are addressed, and solutions are discussed in this paper. The applicability of the often-used analytical models, the overlooked issues related to the mixed ionic-electronic conductivity of perovskites, and the complexity of creating single-carrier devices are investigated using drift-diffusion simulations. Finally, guidelines for more accurate reporting and improved analysis are provided.

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Space-Charge-Limited Current Measurements: A Problematic Technique for Metal Halide Perovskites

Le Corre

2024

J. Phys. Chem. Lett.

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Enhancement of all-inorganic perovskite solar cell performance through the addition of CuI as a hole transport layer additive

Wang,

Jia,

Zhang

et al. 2024

Semicond. Sci. Technol.

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The transport layer is one of the main factors affecting the stability and efficiency of all-inorganic perovskite solar cells. It is still difficult to produce an HTL with the required properties using the present production methods. Based on the solubility, a porous transport layer coated with CuI on an inorganic perovskite layer has been proposed. CuI inclusion promotes an energy level alignment that reduces ionic loss, inhibits charge carrier recombination, and improves hole extraction efficiency. CuI addition corrects surface imperfections of the perovskite and avoids defects caused by Spiro-OMeTAD pinholes, leading to excellent hole extraction performance and fast hole mobility rates. Due to this adjustment, power conversion efficiency (PCE) is improved by 26%, resulting in an optimized PCE of 12.39%. The filling factor (FF) and the short circuit current density (Jsc) were increased to 17.93 mA/cm2 and 0.71, respectively. In addition, the stability of CuI is improved due to the barrier effect of inorganic Cul on air and water entering the perovskite layer. The results show that CuI doped hole transport layer film is a promising method to realize high performance and air-stable PSC.

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Controlled dion-jacobson low-dimensional surface phase enables highly efficient and stable perovskite solar cells

Cited by 2 publications

References 37 publications

Space-Charge-Limited Current Measurements: A Problematic Technique for Metal Halide Perovskites

Space-Charge-Limited Current Measurements: A Problematic Technique for Metal Halide Perovskites

Enhancement of all-inorganic perovskite solar cell performance through the addition of CuI as a hole transport layer additive

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