Efficient and Stable Thin-Film Luminescent Solar Concentrators Enabled by Near-Infrared Emission Perovskite Nanocrystals.

Wu, Jiajing; Tong, Jianyu; Gao, Yuan; Wang, Aifei; Zhang, Tao; Tan, Hairen; Nie, Shuming; Deng, Zhengtao

Wu, Jiajing; Tong, Jianyu; Gao, Yuan; Wang, Aifei; Zhang, Tao; Tan, Hairen; Nie, Shuming; Deng, Zhengtao.

Afiliación

Wu J; College of Engineering and Applied Sciences, Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing, Jiangsu, 210023, P. R. China.
Tong J; College of Engineering and Applied Sciences, Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing, Jiangsu, 210023, P. R. China.
Gao Y; College of Engineering and Applied Sciences, Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing, Jiangsu, 210023, P. R. China.
Wang A; College of Engineering and Applied Sciences, Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing, Jiangsu, 210023, P. R. China.
Zhang T; College of Engineering and Applied Sciences, Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing, Jiangsu, 210023, P. R. China.
Tan H; College of Engineering and Applied Sciences, Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing, Jiangsu, 210023, P. R. China.
Nie S; Departments of Bioengineering, Chemistry, Electrical and Computer Engineering, and Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA.
Deng Z; College of Engineering and Applied Sciences, Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing, Jiangsu, 210023, P. R. China.

Angew Chem Int Ed Engl ; 59(20): 7738-7742, 2020 May 11.

Article en En | MEDLINE | ID: mdl-31999040

ABSTRACT

ABSTRACT

A novel triphenylphosphine (TPP) treatment strategy was developed to prepare the near-infrared emission CsPbI3 nanocrystal (NC)-polymer composite thin-film luminescent solar concentrators (LSCs) featuring high absolute photoluminescence quantum yield (PLQY), low reabsorption, and high stability. The PL emission of the LSCs is centered at about 700ânm with 99.4±0.4 % PLQY and narrow full width at half maximum (FWHM) of 75âmeV (30ânm). Compared with LSCs prepared with classic CsPbI3 NCs, the stability of the LSCs after TPP treatments has been greatly improved, even after long-term (30âdays) immersion in water and strong mercury-lamp irradiation (50âmW cm-2 ). Owing to the presence of lone-pair electrons on the phosphorus atom, TPP is also used as a photoinitiator, with higher efficiency than other common photoinitiators. Large-area (ca. 75âcm2 ) infrared LSCs were achieved with a high optical conversion efficiency of 3.1 % at a geometric factor of 10.

Palabras clave

lead halides; luminescent solar concentrators; nanocrystals; perovskites; polymer composites

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