Stable and high-efficiency P3CT-Na based MAPbI3 solar cells with a graphene quantum-dots down-converter

Autor:	Yung-Sheng Yen, Diksha Thakur, Sheng Hsiung Chang, Meng-Lin Hsieh, Shou-En Chiang, Wei-Ren Liu
Rok vydání:	2021
Předmět:	Photoluminescence Materials science Renewable Energy Sustainability and the Environment business.industry Graphene Energy conversion efficiency Perovskite solar cell Substrate (electronics) law.invention Quantum dot law Solar cell Optoelectronics General Materials Science Thin film business
Zdroj:	Solar Energy. 225:882-891
ISSN:	0038-092X
DOI:	10.1016/j.solener.2021.07.065
Popis:	The photo-induced degradations in the photovoltaic performance of high-efficiency P3CT-Na based CH3NH3PbI3 (MAPbI3) solar cells were investigated by using a boron-doped graphene quantum dots (BG-QDs):poly(methyl methacrylate) (PMMA) film coated glass substrate or a glass substrate as the light shielding window. With the use of a BG-QDs:PMMA film coated glass substrate, the power conversion efficiency (PCE) of the P3CT-Na based MAPbI3 solar cell slightly decreased from 18.50% to 18.23% under one sun illumination for 20 min. To investigate the photo-induced changes in the MAPbI3/P3CT-Na/ITO/glass samples with and without the shielding from a BG-QDs:PMMA/glass substrate, the X-ray diffraction patterns, absorbance spectra and photoluminescence spectra are measured and analyzed. It shows that the blue and green photons can increase the defect density in the MAPbI3 thin film and thereby resulting in the irreversible photovoltaic performance. Fortunately, the BG-QDs:PMMA thin film is not only used to shield the high energy photons, but also can be used as an efficient down-converter and thereby resulting in a stable and high-efficiency perovskite solar cell.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d7d53e37807f51c58277a9ab78c70738 https://doi.org/10.1016/j.solener.2021.07.065 Zobrazit plný text záznamu Full Text from ScienceDirect