量子点
材料科学
硫化铅
封装(网络)
紫外线
光电子学
薄膜
渗透(战争)
湿度
能量转换效率
水分
硫化物
化学工程
纳米技术
复合材料
计算机科学
计算机网络
物理
运筹学
工程类
冶金
热力学
作者
Yiying Wang,Hao Wu,Haotian Gao,Qinyi Ren,Kun Ni,Shanfei Liu,Wanli Ma,Jianxiang Wang,Zeke Liu,Ruiyuan Liu
出处
期刊:Small
[Wiley]
日期:2024-07-19
卷期号:20 (45): e2404984-e2404984
被引量:3
标识
DOI:10.1002/smll.202404984
摘要
Abstract The instability to moisture, heat, and ultraviolet (UV) light is the main problem in the application of quantum dot solar cells (QDSCs). Thin film encapsulation can effectively improve their operational stability. However, it is difficult to achieve multiple barrier effects with single layer of encapsulated film. Here, a hybrid thin‐film encapsulation strategy is reported to encapsulate lead sulfide QDSCs, which can isolate moisture and partial thermal, and prevent the penetration of UV light, thus retarding the surface oxidation process of the quantum dots. After 60 h, the encapsulated device retains a normalized power conversion efficiency of 83.8% and 80.6% at 85% humidity and 75 °C, respectively, which is three and six times of the value obtained in unencapsulated devices. At continuous UV illumination, encapsulated device exhibits five times higher stability than the reference. This strategy provides the way for the overall improvement of the operating stability of lead sulfide QDSCs in harsh environments of high humidity, high temperature, and UV light.
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