Proceedings of 13th Conference on Hybrid and Organic Photovoltaics (HOPV21)
Publication date: 11th May 2021
Perovskite solar cells attracted a lot of interest in the photovoltaic community in the recent years, recording a very fast pace of improving photovoltaic performance. Versatile and low temperature fabrication methods of functional layers in these devices enable application of flexible, polymeric substrates. This, in turn, opens the possibility of offering new, disrupting solutions, such as low-cost manufacturing (roll-to-roll processing), mechanical flexibility, and high specific power.
However, the long-term reliability of these devices poses one of the major concerns for the large-scale utilization of the perovskite technology. Recently, multiple reports showed significant progress in reported stabilities of perovskite solar cells when subjected to accelerated aging tests, including conditioning at elevated temperature (85 oC). In order to pass damp heat test (85 oC, 85% RH), one of the most demanding tests in IEC reliability norms, robust device encapsulation needs to be realized, which is still a challenge for flexible architectures.
In this work, we have tested various encapsulation structures (different adhesives, barrier materials, edge sealants, busbar connections) of perovskite devices with a carbon back contact electrode and subjected them to 85 oC aging tests in inert (glovebox) or high humidity (climate chamber, 85% RH) conditions. We have obtained effective laminates, showing promising stability in the aging test, indicating robust encapsulation. Furthermore, we have identified significant impact of various processing steps (edge sealing, busbar connection, lamination pressure, etc.) on reliability result. [ST2]
[ST1]monopoly? in what sense perovskite PV gripped ‘monopoly’?
[ST2]damp heat is one of many tests in this norm.
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International Conference on Hybrid and Organic Photovoltaics (HOPV) is celebrated yearly in May. The main topics are the development, function and modeling of materials and devices for hybrid and organic solar cells. The field is now dominated by perovskite solar cells but also other hybrid technologies, as organic solar cells, quantum dot solar cells, and dye-sensitized solar cells and their integration into devices for photoelectrochemical solar fuel production.
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