Comparative investigation and analysis of delaminated and discolored encapsulant degradation in crystalline silicon photovoltaic modules

被引:47
作者
Meena, Roopmati [1 ]
Kumar, Sagarika [1 ]
Gupta, Rajesh [1 ]
机构
[1] Indian Inst Technol, Dept Energy Sci & Engn, Mumbai, Maharashtra, India
关键词
Photovoltaic module; EVA; Degradation; Delamination; Discoloration; ETHYLENE-VINYL-ACETATE; PV MODULES; LONG-TERM; EVA ENCAPSULANT; COPOLYMER; STABILIZATION; PERFORMANCE; TOOL;
D O I
10.1016/j.solener.2020.04.041
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
Delamination and discoloration are the most commonly observed encapsulant degradations in crystalline silicon photovoltaic (PV) modules under field conditions. In this work, a comparative analysis of brown discoloration and front side grey appearing delamination of ethylene vinyl acetate (EVA) has been presented, to understand their basic effects and modes of degradation. For this purpose, both type of degraded EVA samples from field-aged PV modules have been investigated, for finding the difference in their spectral response, chemical constituents, structural change, and impact on module electrical performance. These investigations have been performed using quantum efficiency (QE) measurement, Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), and scanning electron microscopy (SEM). In addition, electrical analysis was performed using PSpice circuit simulator. The distinct effect of discolored and delaminated EVA degradations, on incident radiations was identified mainly in absorption and reflection loss respectively, under different wavelengths. Also, the impact of these degradations on module performance, due to mismatch loss within the module has been presented. The chemical constituent investigation, supported presence of delamination in grey degraded sample due to absence of interfacial adhesive agent, in contrast to discolored sample. Findings from the structural investigation, corroborated a decrease in crystalline behaviour of both degradations. Furthermore, impressions from etched silicon cell were observed only in delaminated sample, which can be the reason of its grey appearance and more reflection. This work highlights the comparative effects and impact of dominant EVA degradations in terms of their characteristic aspects, which can be instrumental in improvement of EVA formulation.
引用
收藏
页码:114 / 122
页数:9
相关论文
共 50 条
[41]   Degradation by acetic acid for crystalline Si photovoltaic modules [J].
Masuda, Atsushi ;
Uchiyama, Naomi ;
Hara, Yukiko .
JAPANESE JOURNAL OF APPLIED PHYSICS, 2015, 54 (04)
[42]   Study of Snail Trail Effects on Performance of Crystalline Silicon Photovoltaic Modules [J].
Filho, Neolmar de M. ;
Cardoso Diniz, Antonia S. A. ;
Kazmerski, Lawrence L. .
2021 IEEE 48TH PHOTOVOLTAIC SPECIALISTS CONFERENCE (PVSC), 2021, :1045-1048
[43]   Measurement Repeatability of Crystalline Silicon Photovoltaic Modules in the Field [J].
Huang, Xin ;
He, Fengqin ;
Wang, He ;
Chen, Zewen ;
Lv, Baojie ;
Zhu, Youzhang ;
Niu, Haibo ;
Yang, Hong .
PROGRESS IN PHOTOVOLTAICS, 2025, 33 (08) :854-873
[44]   LIGHT/CURRENT-INDUCED DEGRADATION OF CRYSTALLINE SILICON PHOTOVOLTAIC MODULES UNDER DIFFERENT TEMPERATURES [J].
Zhu B. ;
Song H. ;
Chen H. ;
Huai C. ;
Hu D. ;
He Y. .
Taiyangneng Xuebao/Acta Energiae Solaris Sinica, 2023, 44 (06) :227-233
[45]   Degradation effects on single crystalline silicon photovoltaic modules subjected to high impulse-voltages [J].
Naxakis, Ioannis ;
Christodoulou, Christos ;
Perraki, Vasiliki ;
Pyrgioti, Eleytheria .
IET SCIENCE MEASUREMENT & TECHNOLOGY, 2017, 11 (05) :563-570
[46]   Imaging and micro-structural characterization of moisture induced degradation in crystalline silicon photovoltaic modules [J].
Kumar, Sagarika ;
Meena, Roopmati ;
Gupta, Rajesh .
SOLAR ENERGY, 2019, 194 :903-912
[47]   Degradation analysis of crystalline silicon photovoltaic modules exposed over 30 years in hot-humid climate in China [J].
Han, Huili ;
Dong, Xian ;
Li, Bingzhi ;
Yan, Huan ;
Verlinden, Pierre J. ;
Liu, Jiangfeng ;
Huang, Jiapei ;
Liang, Zongcun ;
Shen, Hui .
SOLAR ENERGY, 2018, 170 :510-519
[48]   Analysis techniques of polymeric encapsulant materials for photovoltaic modules: situation and perspectives [J].
Agroui, K. ;
Jaunich, M. ;
Arab, A. Hadj .
AFRICA-EU SYMPOSIUM ON RENEWABLE ENERGY RESEARCH AND INNOVATION, 2016, 93 :203-210
[49]   Encapsulation-free crystalline silicon photovoltaic modules and their hygrothermal and thermal-cycle tolerance [J].
Imajo, Nobuhito ;
Yamakawa, Yo ;
Takahashi, Hiroaki ;
Ohdaira, Keisuke ;
Masuda, Atsushi .
JAPANESE JOURNAL OF APPLIED PHYSICS, 2023, 62 (SK)
[50]   Field degradation prediction of potential induced degradation of the crystalline silicon photovoltaic modules based on accelerated test and climatic data [J].
Oh, Wonwook ;
Bae, Soohyun ;
Chan, Sung-Il ;
Lee, Hae-Seok ;
Kim, Donghwan ;
Park, Nochang .
MICROELECTRONICS RELIABILITY, 2017, 76 :596-600