Novel laser-assisted glass frit encapsulation for long-lifetime perovskite solar cells
- Martins, M.
- Seyedali Emami
- Madureira, R.
- Joaquim Gabriel Magalhães Mendes
- Ivanou, D.
- Adélio Mendes
DOIAbstract
Hermetic encapsulation protects perovskite solar cells (PSCs) from degradations induced by humidity and oxygen. A novel dual laser beam glass frit sealing process is developed and optimized to hermetically encapsulate PSCs. A 3D transient phenomenological model of the laser-assisted encapsulation is developed, validated and used to optimize the glass sealing procedure. During the laser-sealing process, the cells are subjected to 65 +/- 5 degrees C for a short time of <60 s. This extremely low process temperature glass sealing procedure is applied to encapsulate n-i-p PSCs fabricated with a poly[bis(4-phenyl)(2,4,6-trimethylphenyl)amine] (PTAA) hole transport layer (HTL). The long-term stability of the encapsulated PSCs is examined under ele...
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