A Facile Approach for the Encapsulation of Perovskite Solar Cells

Abstract

Effectively encapsulating perovskite solar cells (PSCs) to enhance the external reliability is the key towards commercialization. We herein propose a facile encapsulation method by introducing conductive ribbons and a polyethylene terephthalate (PET) backsheet on both sides of PSC. Via applying thermoplastic polyolefin (TPO) encapsulant, we implemented PSCs with fine encapsulation, enabling considerable durability in the ambient atmosphere and even with water immersion, demonstrating almost no degradation in the device output, which is ascribed to the low water vapor transmission rate as well as the high chemical stability of TPO. The operation reliability of the encapsulated cell is also significantly increased, maintaining 80% of the initial efficiency after 770 hours’ light illumination in an ambient atmosphere. This novel encapsulation route provides a feasible idea for the commercial application of PSCs in the future.

Uniform Coverage Functional Layers Enable High‐Efficient Flexible Perovskite Solar Modules with an Outstanding Fill Factor

“…[55] In the present study, the conventional encapsulation structure of flexible CIGS was introduced into the FPSCs encapsulation, and the electrodes were extracted as previously reported. [56] Furthermore, see Figure S25, Supporting Information, 3 M ultrabarrier solar films were used as a back sheet and a low-temperature cross-linked polyolefin elastomer (POE) was selected as the encapsulant, which could be completely melted at 110 °C and was suitable for FPSCs based on PEN or PET flexible substrates. Three types of samples were chosen to compare the changes in the photovoltaic parameters before and after encapsulation, including the reference and modified devices; the precise data are shown in Table S5, Supporting Information.…”

Recent Advances in the Photonic Curing of the Hole Transport Layer, the Electron Transport Layer, and the Perovskite Layers to Improve the Performance of Perovskite Solar Cells

“…The progress of perovskite-based solar cells has been significant, in part due to advancements in photonic processing [75]. In addition to work on transport layers and electronic contacts, techniques such as encapsulation [76], efficient surface nanostructuring [77], and optimized light management have improved both the efficiency and stability of perovskite-based cells [78]. These advances pave the way for more efficient, durable, and economically viable perovskite devices.…”

Facile and scalable bilayer polymer encapsulation to achieve long-term stability of perovskite solar cells under harsh humidity conditions

“…13 In recent times, a range of methods have been utilized for the encapsulation of PSCs. These include techniques such as roll to roll (R2R) lamination, thermal sealing, glass-to-glass sandwich encapsulation, and atomic layer deposition with materials like glass frit, 14,15 metal oxides (Al 2 O 3 ), [16][17][18] multi-layered barriers, [19][20][21] polymers like ethylene-vinyl acetate (EVA), 22,23 epoxy, [24][25][26] poly-olens, 27 polyethylene terephthalate (PET), 28,29 polyurethanes, [30][31][32][33][34][35] and paraffin. [36][37][38] Numerous published reviews have focused on encapsulation materials, encapsulation strategies, and barrier design as well.…”