Optimized carrier extraction at interfaces for 23.6% efficient tin-lead perovskite solar cells

被引：296

作者：

Hu, Shuaifeng ^{[1
]}

Otsuka, Kento ^{[1
]}

Murdey, Richard ^{[1
]}

Nakamura, Tomoya ^{[1
]}

Minh Anh Truong ^{[1
]}

Yamada, Takumi ^{[1
]}

Handa, Taketo ^{[1
]}

Matsuda, Kazuhiro ^{[2
]}

Nakano, Kyohei ^{[3
]}

Sato, Atsushi ^{[4
]}

Marumoto, Kazuhiro ^{[4
]}

Tajima, Keisuke ^{[3
]}

Kanemitsu, Yoshihiko ^{[1
]}

Wakamiya, Atsushi ^{[1
]}

机构：

[1] Kyoto Univ, Inst Chem Res, Uji, Kyoto 6110011, Japan

[2] Toray Res Ctr Ltd, Surface Sci Labs, 3-3-7 Sonoyama, Otsu, Shiga 5208567, Japan

[3] RIKEN, Ctr Emergent Matter Sci CEMS, Wako, Saitama 3510198, Japan

[4] Univ Tsukuba, Div Mat Sci, Tsukuba, Ibaraki 3058573, Japan

来源：

ENERGY & ENVIRONMENTAL SCIENCE | 2022年 / 15卷 / 05期

关键词：

PHOTOCARRIER RECOMBINATION; SURFACE TERMINATION; HALIDE PEROVSKITES; SN(II) OXIDATION; STABILITY; CH3NH3PBI3; METHYLAMMONIUM; 24.8-PERCENT; ENHANCEMENT; TRIHALIDE;

D O I：

10.1039/d2ee00288d

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Carrier extraction in mixed tin-lead perovskite solar cells is improved by modifying the top and bottom perovskite surfaces with ethylenediammonium diiodide and glycine hydrochloride, respectively. Trap densities in perovskite layers are reduced as a result of surface passivation effects and an increase in film crystallinity. In addition, the oriented aggregation of the ethylenediammonium and glycinium cations at the charge collection interfaces results in the formation of surface dipoles, which facilitate charge extraction. As a result, the treated mixed tin-lead perovskite solar cells showed improved performance, with a fill factor of 0.82 and a power conversion efficiency of up to 23.6%. The unencapsulated device also shows improved stability under AM1.5 G, retaining over 80% of the initial efficiency after 200 h continuous operation in an inert atmosphere. Our strategy is also successfully applied to centimeter-scale devices, with efficiencies of up to 21.0%.

引用

页码：2096 / 2107

页数：12

共 92 条

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[92] Self-Additive Low-Dimensional Ruddlesden-Popper Perovskite by the Incorporation of Glycine Hydrochloride for High-Performance and Stable Solar Cells [J].

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ADVANCED FUNCTIONAL MATERIALS, 2020, 30 (15)

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