Directional Transformation of Heterometallic Oxo Clusters: A New Approach to Prepare Wide-Bandgap Cathode Interlayers for Perovskite Solar Cells

被引：10

作者：

Xiao, Guo-Bin ^{[1
]}

Mu, Xijiao ^{[1
]}

Zhou, Shuyu ^{[2
]}

Zhu, Liu ^{[3
,4
]}

Peng, Yong ^{[3
,4
]}

Liang, Qing ^{[5
,6
]}

Zou, Xiaoxin ^{[7
]}

Zhang, Jian ^{[2
]}

Zhang, Lei ^{[2
,8
]}

Cao, Jing ^{[1
]}

机构：

[1] Lanzhou Univ, Coll Chem & Chem Engn, State Key Lab Appl Organ Chem, Key Lab Nonferrous Met Chem & Resources Utilizat G, Lanzhou 730000, Peoples R China

[2] Chinese Acad Sci, Fujian Inst Res Struct Matter, State Key Lab Struct Chem, Fuzhou 350002, Peoples R China

[3] Lanzhou Univ, Sch Mat & Energy, Lanzhou 730000, Peoples R China

[4] Lanzhou Univ, Electron Microscopy Ctr, Lanzhou 730000, Peoples R China

[5] Chinese Acad Sci, Lanzhou Inst Chem Phys, Key Lab Chem Northwestern Plant Resources, Lanzhou 730000, Peoples R China

[6] Chinese Acad Sci, Lanzhou Inst Chem Phys, Key Lab Nat Med Gansu Prov, Lanzhou 730000, Peoples R China

[7] Jilin Univ, Coll Chem, Key State Key Lab Inorgan Synth & Preparat Chem, Changchun 130012, Peoples R China

[8] Nankai Univ, Inst Modern Opt, Coll Elect Informat & Opt Engn, Tianjin 300350, Peoples R China

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2023年 / 62卷 / 17期

基金：

中国国家自然科学基金;

关键词：

Cathode Interlayer; Oxo Cluster; Perovskite; Solar Cells; Wide Band Gap; TRANSPORT;

D O I：

10.1002/anie.202218478

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Typical wide-band gap cathode interlayer materials are difficulty in reducing interface recombination without limiting charge transport in perovskite solar cells (PSCs). Here, a lead-doped titanium-oxo cluster protected by S-containing ligands is introduced at the interface of perovskite and SnO2. By in situ heating, the cluster is transformed into PbSO4-PbTi3O7 heterostructure. The oxygen atoms from sulfate ion in heterostructure connect with iodine from perovskite to boost interfacial electron extraction and reduce charge recombination. While the yielded metallic interface between PbSO4 and PbTi3O7 promotes the electron transport across the interface. Finally, an efficiency as high as 24.2 % for the modified PSC is obtained. The heterostructure well-stabilize the interface of perovskite and SnO2, to greatly improve the device stability. This work provides a novel strategy to prepare wide-band gap cathode interlayer by directional transformation of heterometallic oxo clusters.

引用

页数：7

共 46 条

[41] Reconfiguration of interfacial energy band structure for high-performance inverted structure perovskite solar cells [J].