Stability Enhancement for All Inorganic CsPbX3 Perovskite Solar Cells via Metal Ions Doping
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摘要: 钙钛矿太阳能电池具有光电转换效率高、成本低等优势,有望成为新一代光伏技术。然而,钙钛矿材料本身较低的稳定性限制了其商业化应用。因此,提高钙钛矿材料的稳定性对进一步推进钙钛矿太阳能电池的实用化至关重要。综述了金属离子掺杂在全无机钙钛矿太阳能电池的结构、组成及稳定性等方面的进展,重点介绍了以A位和B位金属离子2类典型的离子掺杂稳定全无机钙钛矿太阳能电池的研究工作。最后,提出了金属离子掺杂作为全无机钙钛矿太阳能电池稳定性强化策略所面临的机遇和挑战。Abstract: Perovskite solar cells (PSCs) are expected to be the new generation of photovoltaic technologies, owning to their high photoelectric conversion efficiency and low cost. However, the lower stability of perovskite materials restricts their commercial application. Therefore, it is vital to improve the stability of perovskite materials to further promote the practicality of perovskite solar cells. The progress of metal ion doping strategy in tuning the structure, composition, and stability of all-inorganic perovskite solar cells was reviewed, with emphasis on the metal ions doping at the A- and B-site of CsPbX3 perovskites. Finally, the opportunities and challenges of metal ion doping to develop highly efficient and stable all-inorganic perovskites solar cells were put forward.
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Key words:
- solar cells /
- all inorganic perovskite /
- metal ion doping /
- stability
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图 4 (a) CsPbI2Br钙钛矿器件结构以及Mn2+离子掺杂的示意图[28];(b) Zn(蓝色球)在钙钛矿晶格间隙的示意图[32];(c) Eu3+离子掺杂CsPbI3钙钛矿的结构示意图[34];(d)Cu2+离子掺杂CsPbI2Br钙钛矿太阳能电池器件的J-V曲线[40]
Figure 4. (a) Schematic structure of the device and illustration of the Mn2+ ions doping modes: interstitial and substituting[28], (b) The scheme of interstitial Zn (blue ball) in perovskite lattice[32], (c) Schematic structure of the Eu3+ ions doping CsPbI3 perovskite[34], (d) J-V curves of Cu2+ ions doping CsPbI2Br perovskite solar cells[40]
表 1 全无机钙钛矿中的掺杂离子及其半径和对应的功率转换效率
Table 1. Doped ions in all-inorganic perovskites, their radius and corresponding PCE
掺杂离子 离子半径/pm 钙钛矿组分 效率/% 参考文献 Mn2+ 67 CsPbI2Br 13.47 [28] Sr2+ 113 CsPbI2Br 11.3 [29] Ca2+ 100 CsPbI3 13.3 [30] Ba2+ 135 CsPbI2Br 14.0 [31] Zn2+ 74 CsPbI2Br 13.6 [32] Sn2+ 112 CsPbI2Br 11.33 [33] Eu3+ 95 CsPbI3 6.0 [34] Eu2+ 117 CsPbI2Br 13.71 [35] Bi3+ 108 CsPbI3 13.21 [36] Ni2+ 69 CsPbI2Br 13.88 [37] Ge2+ 73 CsPbI2Br 10.8 [38] Nb5+ 64 CsPbI2Br 10.42 [39] Cu2+ 73 CsPbI2Br 16.15 [40] -
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