Towards 50 Year Lifetime PV Modules: Double Glass vs. Glass/Backsheet
- Case Western Reserve Univ., Cleveland, OH (United States); Case Western Reserve University
This award aims to increase the lifetime of c-Si modules by lowering the power degradation rate to the goal of 0.2 %/year, while also increasing the harvested irradiance per module using bifacial cells to achieve the 2030 SunShot goal of $0.03/kWh. Increasing the durability and lifetime of modules requires improved module packaging material choices and module architectures to exploit new cell improvements. Bifacial PERC cells (with backside aluminum fingers) are becoming a primary PV technology due to their decreased rear surface recombination and increased light absorption compared to traditional monofacial Al-BSF cells. Bifacial modules with double glass architectures have been deployed to capture the rear-side irradiance thereby increasing the light captured. The choice of a double glass (DG) or glass/backsheet (GB) module leads to two very different chemical (e.g., O2, H2O) and mechanical environments (e.g., mechanical stress levels) inside the PV module that impact the cell’s operational conditions. The recipient will fabricate 4-cell DG and GB minimodules with various module architectures or constructions (mono- & bifacial cells, transparent & white encapsulants), and conduct stepwise accelerated exposures and characterization.
- Research Organization:
- Case Western Reserve Univ., Cleveland, OH (United States)
- Sponsoring Organization:
- USDOE; USDOE Office of Energy Efficiency and Renewable Energy (EERE), Office of Technology Utilization
- Contributing Organization:
- Canadian Solar, Inc.; National Renewable Energy Laboratory (NREL), Golden, CO (United States); Cybrid; Dupont
- DOE Contract Number:
- EE0008550
- OSTI ID:
- 2333645
- Report Number(s):
- DOE-CWRU--08550
- Country of Publication:
- United States
- Language:
- English
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