The poly(styrene-co-acrylonitrile) polymer assisted preparation of high-performance inverted perovskite solar cells with efficiency exceeding 22%

Stabilizing all-inorganic CsPbI3 perovskite films with polyacrylonitrile for photovoltaic solar cells

“…23 Recently, Yang et al employed poly(styrene-co-acrylonitrile) polymer (PS-PAN polymer) to modify the surfaces of organic-inorganic hybrid perovskite films. 25 The nitrile (CRN) groups in the side chain could coordinate with Pb 2+ defects at the surface and the grain boundaries of the perovskite, similar to CN-containing small molecules reported previouly. [25][26][27][28] In this work, polyacrylonitrile (PAN) was employed as a passivation agent to passivate bulk CsPbI 3 perovskite defects and improve the device stability.…”

“…[9][10][11][12][13][14][15][16][17][18][19][20] Moreover, defect passivation is found to be another effective method for further improvement of both the efficiency and stability of CsPbI 3 solar cells. [18][19][20][21][22][23][24][25][26][27][28] In the past years, small-molecule organic ammonium salts have been employed to passivate the defects in CsPbI 3 films. [18][19][20] Zhao et al introduced phenyltrimethylammonium chloride (PTACl) to passivate the defects at the surfaces and grain boundaries of CsPbI 3 films by a solution post-treatment method, and the charge-carrier lifetime of the device was greatly increased with a PCE of up to 19%.…”

“…Thus, polymer passivation agents with the same functional groups are expected to overcome these shortcomings. [21][22][23][24][25] Previously, Li et al introduced poly(4-vinylpyridine) (PVP) as a passivation agent to synthesize long-term stable cubic CsPbI 3 . 21 The acylamino groups in PVP enhanced the electron cloud density on the surface of CsPbI 3 , thus reducing the surface energy.…”

Designing Efficient MoS2/g‐C3N4 Hybrid Photocatalysts by Regulating the Interlayer Spacing of MoS2

“…Hydrogen energy is one of the most promising candidate for replacing traditional fossil fuels. [1][2][3][4][5][6][7][8][9][10][11] It is an effective method to produce hydrogen from water by photocatalytic technology and many efforts have been made to explore various kinds of potential semiconductors. Recently, g-C 3 N 4 as an appealing photocatalyst has received much attention due to its abundance, nontoxicity, and unique photoelectric properties.…”

Fabrication by Spin-Coating and Optical Characterization of Poly(styrene-co-acrylonitrile) Thin Films

“…PSAN thin films fabricated by dip-coating have been used to fabricate waveguides on glass substrates [16]. Recently, it has been shown that PSAN can passivate defects in perovskite solar cells and increase their efficiency [17]. Most of these characteristics and applications are based on PSAN particles or thick films while few studies have addressed the properties of very thin PSAN films (thickness below 1 micron) [18,19], that could be suitable for optical interferential coatings.…”