Overcoming the Challenges of Large-Area High-Efficiency Perovskite Solar Cells

Abstract

For the first time, we report large-area (16 cm2) independently certified efficient single perovskite solar cells (PSCs) by overcoming two challenges associated with large-area perovskite solar cells. The first challenge of realizing a homogeneous and densely packed perovskite film over a large area is overcome by using an antisolvent spraying process. The second challenge of removing the series resistance limitation of transparent conductor is overcome by incorporating a metal grid designed using a semidistributed diode model. A 16 cm2 perovskite solar device at the cell level rather than at the module level is demonstrated using the modified solution process in conjunction with the use of a metal grid. The cell is independently certified to be 12.1% efficient. This work paves the way toward highly efficient and large perovskite cells without single-junction perovskite solar cells and silicon–perovskite tandems.

Mixed 3D–2D Passivation Treatment for Mixed‐Cation Lead Mixed‐Halide Perovskite Solar Cells for Higher Efficiency and Better Stability

“…Results are shown in Figure 2. [9,17,27] Upon deposition of the mixture of FAI and iBAI solution on the perovskite surface, prominent changes can be observed: 1) the bright white grains on the surface disappeared; 2) surface morphology is changed as the iBAI content increases. [9,17,27] Upon deposition of the mixture of FAI and iBAI solution on the perovskite surface, prominent changes can be observed: 1) the bright white grains on the surface disappeared; 2) surface morphology is changed as the iBAI content increases.…”

“…Note that the trend observed in the peak PL intensity (see Figure S8a in the Supporting Information) follows that of V OC in the full devices (Figure 1d), indicating reduction in charge-carrier nonradiative recombination. Effective lifetimes (calculated from PL decay using Equation (S2) in the Supporting Information [27,31] ) significantly improve with MP treatments compared to unpassivated perovskite film (see Figure S8c in the Supporting Information). Effective lifetimes (calculated from PL decay using Equation (S2) in the Supporting Information [27,31] ) significantly improve with MP treatments compared to unpassivated perovskite film (see Figure S8c in the Supporting Information).…”

Two‐Terminal Perovskites Tandem Solar Cells: Recent Advances and Perspectives

“…Due to the strong optical absorption, long diffusion length distinguished compatibility, and tunability of broad bandgap, metal halide perovskites (ABX 3 ) have achieved rapidly increasing efficiencies and opened up a great potential to develop perovskite‐based tandem cells . Moreover, by taking advantages of cost‐effectiveness and facile solution processability, scalable processing methods for fabricating defect‐free and large‐scale perovskite films, such as antisolvent spraying, meniscus‐assisted solution printing (MASP), etc., further promote the development of perovskite‐based tandem cells. To date, most reported perovskite‐based tandem cells are based on perovskite–silicon (1.1 eV), perovskite–perovskite and perovskite–CIGS (1.02–1.68 eV) integrations …”

Halide perovskites: current issues and new strategies to push material and device stability

“…Over the thousands of papers published on PSCs in the last five years, very few deal with 'large area' concept, i.e. 1 cm 2 active area [65,66]. This is a critical challenge.…”