Light-Stable Methylammonium-Free Inverted Flexible Perovskite Solar Modules on PET Exceeding 10.5% on a 15.7 cm² Active Area

Abstract

Perovskite solar modules (PSMs) have been attracting the photovoltaic market, owing to low manufacturing costs and process versatility. The employment of flexible substrates gives the chance to explore new applications and further increase the fabrication throughput. However, the present state-of-the-art of flexible perovskite solar modules (FPSMs) does not show any data on light-soaking stability, revealing that the scientific community is still far from the potential marketing of the product. During this work, we demonstrate, for the first time, an outstanding light stability of FPSMs over 1000 h considering the recovering time ( T 80 = 730 h), exhibiting a power conversion efficiency (PCE) of 10.51% over a 15.7 cm 2 active area obtained with scalable processes by exploiting blade deposition of a transporting layer and a stable double-cation perovskite (cesium and formamidinium, CsFA) absorber.

Photoinduced Cross Linkable Polymerization of Flexible Perovskite Solar Cells and Modules by Incorporating Benzyl Acrylate

“…The J-V curve of the F-PSMs is shown in Figure 4b (Table S4, Supporting Information), where the PCE of the BzA modified F-PSM and the control one is 16.75% and 14.79%, respectively. To determine the efficiency, we summarize the recently reported F-PSMs with different effective areas in Figure 4c (Table S5, Supporting Information), [15][16][17][18][19][20][21][22][23][27][28][29][30][58][59][60][61][62][63][64][65][66] where the solid star represents this work. Evidently, we prove our best F-PSMs yielding the record performance.…”

“…[14][15][16][17][18][19] Definitely, it can work for the energy supply of certain emerging fields such as consumer electronic terminals and the Internet of Things. [20][21][22][23] Considering the unpredictable application environment, operational stability and humidity tolerance of PSCs should be further reinforced for future commercialization. [24][25][26] Solution process currently dominates the preparation method for flexible perovskite solar cells.…”

Flexible Perovskite Solar Cells: From Materials and Device Architectures to Applications

“…Because of the vast waste of precursor solution and low manufacture efficiency, the spin coating strategy is not applicable for the practical application. , Instead, printing strategies such as doctor blading, ,, slot die coating, spray coating, − and inkjet printing have the advantages of low cost and high throughput manufacture to produce large-scale PSC modules. In the following sections, large-scale printing strategies including doctor blading, slot die coating, and R2R printing will be discussed. …”

Recent developments in perovskite-based precursor inks for scalable architectures of perovskite solar cell technology

“…On the other hand, Castriotta and co-workers developed a blade-coated scalable precursor ink of the perovskite light-absorbing layer to produce a flexible perovskite solar module on an ITO-PET substrate. 112 A Cs 0.17 FA 0.83 Pb(I 0.9 Br 0.1 ) 3 -based precursor ink was produced by dissolving CsI, PbBr 2 , FAI, and PbI 2 in 1 mL of N -methyl-2-pyrrolidone (NMP)/DMF solvent, which was deposited on the HTL-coated ITO-PET substrate with N 2 -assisted blade-coating, followed by heating (100 °C) for 45 minutes. With this inverted device design produced on an ITO-PET substrate, the flexible module also exhibited >10% power conversion efficiency (PCE) over a 15.7 cm 2 active area by exploiting blade deposition of the transporting layer and a stable double-cation perovskite (cesium and formamidinium, CsFA)-based light-absorbing layer.…”