Record Open-Circuit Voltage Wide-Bandgap Perovskite Solar Cells Utilizing 2D/3D Perovskite Heterostructure

被引：411

作者：

Gharibzadeh, Saba ^{[1
,2
]}

Nejand, Bahram Abdollahi ^{[1
,2
]}

Jakoby, Marius ^{[1
,2
]}

Abzieher, Tobias ^{[2
]}

Hauschild, Dirk ^{[3
,4
]}

Moghadamzadeh, Somayeh ^{[1
,2
]}

Schwenzer, Jonas A. ^{[1
,2
]}

Brenner, Philipp ^{[2
]}

Schmager, Raphael ^{[2
]}

Haghighirad, Amir Abbas ^{[5
]}

Weinhardt, Lothar ^{[3
,4
]}

Lemmer, Uli ^{[1
,2
]}

Richards, Bryce S. ^{[1
,2
]}

Howard, Ian A. ^{[1
,2
]}

Paetzold, Ulrich W. ^{[1
,2
]}

机构：

[1] Karlsruhe Inst Technol, Inst Microstruct Technol, Hermann von Helmholtz Pl 1, D-76344 Karlsruhe, Germany

[2] Karlsruhe Inst Technol, Light Technol Inst, Engesserstr 13, D-76131 Karlsruhe, Germany

[3] KIT, Inst Photon Sci & Synchrotron Radiat IPS, Hermann von Helmholtz Pl 1, D-76344 Eggenstein Leopoldshafen, Germany

[4] KIT, Inst Chem Technol & Polymer Chem ITCP, Engesserstr 18-20, D-76128 Karlsruhe, Germany

[5] Karlsruhe Inst Technol, Inst Solid State Phys, Hermann von Helmholtz Pl 1, D-76021 Karlsruhe, Germany

来源：

ADVANCED ENERGY MATERIALS | 2019年 / 9卷 / 21期

关键词：

2D Ruddlesden-Popper; 2D; 3D perovskite heterostructure; metal halide perovskites; photovoltaics; solar cells; wide bandgap; HALIDE PEROVSKITES; EFFICIENCY; LIGHT; RECOMBINATION; STABILITY; TRIHALIDE; EMERGENCE; ELECTRON; CATION; STATES;

D O I：

10.1002/aenm.201803699

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this work, the authors realize stable and highly efficient wide-bandgap perovskite solar cells that promise high power conversion efficiencies (PCE) and are likely to play a key role in next generation multi-junction photovoltaics (PV). This work reports on wide-bandgap (approximate to 1.72 eV) perovskite solar cells exhibiting stable PCEs of up to 19.4% and a remarkably high open-circuit voltage (V-OC) of 1.31 V. The V-OC-to-bandgap ratio is the highest reported for wide-bandgap organic-inorganic hybrid perovskite solar cells and the V-OC also exceeds 90% of the theoretical maximum, defined by the Shockley-Queisser limit. This advance is based on creating a hybrid 2D/3D perovskite heterostructure. By spin coating n-butylammonium bromide on the double-cation perovskite absorber layer, a thin 2D Ruddlesden-Popper perovskite layer of intermediate phases is formed, which mitigates nonradiative recombination in the perovskite absorber layer. As a result, V-OC is enhanced by 80 mV.

引用

页数：10

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