Colloidal carbon dots based highly stable luminescent solar concentrators

被引：157

作者：

Zhou, Yufeng ^{[1
]}

Benetti, Daniele ^{[1
]}

Tong, Xin ^{[1
,2
]}

Jin, Lei ^{[1
]}

Wang, Zhiming M. ^{[2
]}

Ma, Dongling ^{[1
]}

Zhao, Haiguang ^{[3
,4
]}

Rosei, Federico ^{[1
,2
]}

机构：

[1] Inst Natl Rech Sci, Ctr Energy Mat & Telecommun, 1650 Blvd Lionel Boulet, Varennes, PQ J3X 1S2, Canada

[2] Univ Elect Sci & Technol China, Inst Fundamental & Frontier Sci, Chengdu 610054, Sichuan, Peoples R China

[3] Qingdao Univ, Coll Phys, 308 Ningxia Rd, Qingdao 266071, Peoples R China

[4] Qingdao Univ, Cultivat Base, State Key Lab, 308 Ningxia Rd, Qingdao 266071, Peoples R China

来源：

NANO ENERGY | 2018年 / 44卷

基金：

加拿大创新基金会; 加拿大自然科学与工程研究理事会;

关键词：

Metal-free; Carbon dots; Highly stable; Luminescent solar concentrators; QUANTUM DOTS; HIGH-EFFICIENCY; STOKES-SHIFT; NANOCRYSTALS; GRAPHENE; NANODOTS;

D O I：

10.1016/j.nanoen.2017.12.017

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Luminescent solar concentrators (LSCs) can serve as large-area sunlight collectors for photovoltaic (PV) cells, reducing the cost of PV generated power. Typical LSCs consist of optical waveguides doped with highly emissive fluorophores e.g. quantum dots (QDs) or dyes/polymers which are required to exhibit high optical efficiency and long-term stability. Compared to conventional fluorophores, carbon dots (C-dots) have superior advantages of non-toxicity, environmental friendliness, low-cost and simple preparation using abundant carbon based feedstock. Here, we demonstrate large-area LSCs (up to 100 cm(2)) using colloidal C-dots. Two types of LSCs were fabricated by either incorporating oil-soluble oleylamine-treated C-dots into photo-polymerized poly(lauryl methacrylate) (PLMA) or spin-coating the water-soluble C-dots/polyvinylpyrrolidone (PVP) mixture on the glass substrate. LSCs based on C-dots/PLMA exhibit a quantum efficiency of 4% (geometric (G) factor of 38) and an optical efficiency of 1.1% (100 cm(2), G factor of 12.5) of tandem thin-film LSCs based on C-dots/PVP was achieved under one sun illumination. This performance is comparable to those of LSCs based on inorganic QDs with similar G factor. The LSCs based on C-dots are highly air-stable without any noticeable variation in photoluminescence under ultraviolet illumination (1.3 W/cm(2)) for over 12 h.

引用

页码：378 / 387

页数：10

共 46 条

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