DataVXACS Energy LettersPaper
journal article·2023-01-13

Targeted Design of Surface Configuration on CsPbI3 Perovskite Nanocrystals for High-Efficiency Photovoltaics

Lin Yuan, Xiang Sun, Xuliang Zhang, Fangchao Li, Yang Liu, Yiyuan Gao, Hongqiang Qian, Zeke Liu, Wanli Ma

ACS Energy Letters· Volume 8· Issue 1
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Source abstract

Abstract

The advanced optoelectronic properties of the emerging halide perovskite nanocrystals (PNCs) have brought forth new opportunities for photovoltaic applications. However, their dynamic ligand binding and fragile crystal structure make the conventional NC surface manipulation strategies inaccessible. It is urgent to specially design the surface configuration of PNCs for high-efficiency photovoltaics. Herein, we develop the synthesis of CsPbI3 PNCs with a guanidinium (GA)-anchored surface based on a vacancy-suppressed ternary-precursor method. The hydrogen bond between GA+ and surrounding iodine can reinforce the PNC surface and improve surface passivation. Furthermore, the short GA+ can ensure high interdot coupling in the PNC film. Therefore, the obtained PNC film can realize both a low trap density and high carrier mobility. Consequently, a champion power conversion efficiency (PCE) of 15.83% can be achieved. In addition, the production yield of our method is significantly higher than that of the conventional method, which makes the synthesis protocol more suitable for future scalable manufacturing.
Source: openalex_inverted_index · Quality: baseline

Research context

NanomaterialsElectronic materialsComposites

OpenAlex topics: Perovskite Materials and Applications · Quantum Dots Synthesis And Properties · 2D Materials and Applications

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

Affiliations

Institute of Functional Nano & Soft Materials (FUNSOM), Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, Suzhou 215123, Jiangsu, People’s Republic of China

Jiangsu Key Laboratory of Advanced Negative Carbon Technologies, Soochow University, Suzhou 215123, Jiangsu, People’s Republic of China

Suzhou Talesun Solar Technologies Co., Ltd., Changshu 215542, Jiangsu, People’s Republic of China

Funding

Collaborative Innovation Center of Suzhou Nano Science and Technology · Ministry of Science and Technology of the People's Republic of China · China Postdoctoral Science Foundation · Natural Science Foundation of Jiangsu Province · Government of Jiangsu Province · National Natural Science Foundation of China · Higher Education Discipline Innovation Project · Suzhou Key Laboratory of Functional Nano and Soft Materials · Natural Science Foundation of the Jiangsu Higher Education Institutions of China

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