DataVXACS Energy LettersPaper
journal article·2019-05-10

Interlayer Interaction Enhancement in Ruddlesden–Popper Perovskite Solar Cells toward High Efficiency and Phase Stability

Mingzhu Long, Tiankai Zhang, Dongcheng Chen, Minchao Qin, Zefeng Chen, Li Gong, Xinhui Lu, Fangyan Xie, Weiguang Xie, Jian Chen, Jianbin Xu

ACS Energy Letters· Volume 4· Issue 5
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Source abstract

Abstract

Ruddlesden–Popper perovskites (RPPs) have attracted intense attention owing to their superior stability. However, the interspace and weak interaction between the inorganic layers inhibits direct charge transfer and brings the phase segregation issue under light illumination. Herein, it is presented that after incorporation of a symmetric cation guanidinium (GA+) with three amino groups the crystallinity, photoelectronic properties, and stability can be synchronously ameliorated owning to the enhanced interlayer interaction. The new (BA,GA)2(MA)2Pb3I10 RPP film shows a preferentially vertical orientation and possesses a spatially well-aligned band from the bottom to the top surface, resulting in fast energy transfer. It contributes to a large Voc of 1.25 V with minimized nonradiative loss of 0.14 V and a boosted efficiency of 14.47%. More importantly, the lattice strain in the RPP film can be eliminated due to the medium size of GA+, protecting it from phase segregation even under laser irradiation.
Source: openalex_inverted_index · Quality: baseline

Research context

Electronic materials

OpenAlex topics: Perovskite Materials and Applications · Quantum Dots Synthesis And Properties · Advanced Photocatalysis Techniques

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Electronic Engineering, The Chinese University of Hong Kong, Shatin, New Territories 999077, Hong Kong

State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, People’s Republic of China

Department of Physics, The Chinese University of Hong Kong, Shatin, New Territories 999077, Hong Kong

Instrumental Analysis and Research Centre, Sun Yat-sen University, Guangzhou 510275, People’s Republic of China

Guangzhou Key Laboratory of Vacuum Coating Technologies and New Energy Materials, Department of Physics, Jinan University, Guangzhou 510632, People’s Republic of China

Funding

National Natural Science Foundation of China · Research Grants Council, University Grants Committee · Innovation and Technology Commission

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