气候变化领域集成服务门户(CCPortal): Tremendously enhanced photocurrent enabled by triplet-triplet annihilation up-conversion for high-performance perovskite solar cells

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DOI	10.1039/d1ee00631b
	Tremendously enhanced photocurrent enabled by triplet-triplet annihilation up-conversion for high-performance perovskite solar cells
	Sheng W.; Yang J.; Li X.; Liu G.; Lin Z.; Long J.; Xiao S.; Tan L.; Chen Y.
发表日期	2021
ISSN	17545692
起始页码	3532
结束页码	3541
卷号	14 期号:6
英文摘要	The limited solar spectrum utilization hinders the further amelioration of the performance of perovskite solar cells (PVSCs). An up-conversion (UC) process extends the spectral absorption of PVSCs from the visible to near-infrared (NIR) range and minimizes the sub-band-gap photon transmission loss. The perovskite-sensitized triplet-triplet annihilation (TTA) from rubrene (Rub) and dibenzotetraphenylperiflanthene (DBP) has shown great potential in UC applications. Herein, the TTA UC mechanism is introduced for the first time into PVSCs for converting NIR photons to visible photons, which facilitates the obvious improvement of photocurrent. Attributed to the TTA UC effect and energy band alignment of the Rub:DBP UC layer with the perovskite, the MAPbI3based PVSCs acquire a champion power conversion efficiency (PCE) of 20.18% accompanied by significant enhancements in the short circuit current density (Jsc) and open-circuit voltage (Voc). In addition, rubrene doping can promote perovskite growth owing to the formation of π-conjugated agglomerates, which serve as the growing sites for perovskite crystallization nuclei. Furthermore, the Rub:DBP-based unencapsulated devices exhibit excellent moisture stability, and maintain more than 80% of the primitive PCE after 14 days of storage under air conditions (50-70% humidity, 25 °C). © The Royal Society of Chemistry 2021.
英文关键词	Conversion efficiency; Energy gap; Infrared devices; Lead compounds; Open circuit voltage; Perovskite; Photocurrents; Photons; Energy-band alignment; Moisture stability; Near-infrared range; Photon transmission; Power conversion efficiencies; Rubrene doping; Spectral absorptions; Triplet-triplet annihilation; Perovskite solar cells; absorption; crystallization; energy efficiency; fuel cell; performance assessment; perovskite; remediation; visible spectrum
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/190640
作者单位	College of Chemistry/Institute of Polymers and Energy Chemistry (IPEC), Nanchang University, 999 Xuefu Avenue, Nanchang, 330031, China; Institute of Advanced Scientific Research (iASR), Jiangxi Normal University, 99 Ziyang Avenue, Nanchang, 330022, China
推荐引用方式 GB/T 7714	Sheng W.,Yang J.,Li X.,et al. Tremendously enhanced photocurrent enabled by triplet-triplet annihilation up-conversion for high-performance perovskite solar cells[J],2021,14(6).
APA	Sheng W..,Yang J..,Li X..,Liu G..,Lin Z..,...&Chen Y..(2021).Tremendously enhanced photocurrent enabled by triplet-triplet annihilation up-conversion for high-performance perovskite solar cells.Energy & Environmental Science,14(6).
MLA	Sheng W.,et al."Tremendously enhanced photocurrent enabled by triplet-triplet annihilation up-conversion for high-performance perovskite solar cells".Energy & Environmental Science 14.6(2021).