Phase Segregation and Voltage Loss Mitigated Highly Efficient Perovskite–Organic Tandem Solar Cells with a Simple Ambipolar SnOx Interconnecting Layer

Xie，Guanshui1; Li，Huan1; Wang，Xin1; Fang，Jun1; Lin，Dongxu1; Wang，Daozeng1; Li，Sibo1; He，Sisi2; Qiu，Longbin1

2023

10.1002/adfm.202308794

Advanced Functional Materials   Impact Factor & Quartile

1616-301X

1616-3028

The wide-bandgap (WBG) perovskite solar cells (PSCs) and narrow-bandgap organic solar cells (OSCs) integrated tandem solar cells (TSCs) show great potential for overwhelming single junction structure, especially the advantage of applying orthogonal solvents for allowing solution processed of each subcell. However, the WBG perovskite with high Br content suffers from serious phase segregation and voltage loss. The commonly used interconnection layer (ICL) in TSCs requires a vacuum-deposited thin metal recombination layer leading to remarkable optical loss. Herein, WBG perovskite with a bandgap of 1.77 eV yields an impressive open-circuit voltage (V) of 1.33 V and a minimum voltage loss of 0.44 V by an elaborate dielectric interface structure reducing the interfacial recombination. Furthermore, the WBG perovskite with a simple SnO buffer layer exhibits significantly suppressed phase segregation and improved performance. Consequently, a simplified buffer layer based on the SnO that serves as the ICL in perovskite–organic TSCs contributing enhanced light harvesting in the near-infrared region is developed, yielding an efficiency of 22.31%. The simplified ICL that does not involve a metal layer is a potential strategy for scalable and flexible perovskite-based TSCs.

interconnecting layer perovskite–organic tandem phase segregation voltage loss wide bandgap perovskite

SCI

English

NI Journal Papers

First ; Corresponding

National Natural Science Foundation of China[22109067] ; Guangdong Provincial Science and Technology Program[2022A1515010085] ; Guangdong Grants["2021ZT09C064","2021QN02L138"] ; Shenzhen Science and Technology Innovation Program["JCYJ20220530115013029","ZDSYS20220527171403009"]

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:001064019800001

WILEY-V C H VERLAG GMBH

MATERIALS SCIENCE

2-s2.0-85169901623

Scopus

1.Shenzhen Key Laboratory of Intelligent Robotics and Flexible Manufacturing Systems,Department of Mechanical and Energy Engineering,SUSTech Energy Institute for Carbon Neutrality,Southern University of Science and Technology,Shenzhen,518055,China
2.Shenzhen Key Laboratory of Flexible Printed Electronics Technology,School of Science,Harbin Institute of Technology (Shenzhen),University Town,Shenzhen,Guangdong,518055,China

Xie，Guanshui,Li，Huan,Wang，Xin,等. Phase Segregation and Voltage Loss Mitigated Highly Efficient Perovskite–Organic Tandem Solar Cells with a Simple Ambipolar SnOx Interconnecting Layer[J]. Advanced Functional Materials,2023.

Xie，Guanshui.,Li，Huan.,Wang，Xin.,Fang，Jun.,Lin，Dongxu.,...&Qiu，Longbin.(2023).Phase Segregation and Voltage Loss Mitigated Highly Efficient Perovskite–Organic Tandem Solar Cells with a Simple Ambipolar SnOx Interconnecting Layer.Advanced Functional Materials.

Xie，Guanshui,et al."Phase Segregation and Voltage Loss Mitigated Highly Efficient Perovskite–Organic Tandem Solar Cells with a Simple Ambipolar SnOx Interconnecting Layer".Advanced Functional Materials (2023).