Constructing robust heterointerfaces for carrier viaduct via interfacial molecular bridges enables efficient and stable inverted perovskite solar cells

Abstract

A robust perovskite-substrate interface is critical to realize state-of-the-art inverted (p-i-n) perovskite solar cells (PSCs), as it enables charge carrier selectivity by the means of suitable electrostatics, energy level alignment,...

Solvation‐Driven Grain Boundary Passivation Improving the Performance of Perovskite Solar Cells

“…[56,57] The FF loss between the Shockley-Queisser (S-Q) limit and the measured value (consisting of nonradiative loss and charge transport loss) is compared to better understand the loss mechanism of PSCs (Note S7, Supporting Information). [58,59] Figure 5f shows that SDP-PCE M effectively inhibits both nonradiative and charge transfer loss, resulting in an FF of 84.86%. Predominantly, SDP-FF M , because of effectively inhibiting nonradiative loss and reducing charge transfer loss to a greater extent, thus significantly enhancing FF up to 86.0%, corresponding to 95.6% of the thermodynamic limit of its bandgap (Table S8, Supporting Information).…”

Perovskite solar cells with high-efficiency exceeding 25%: A review

“…Excess PbI 2 can undermine device stability and increase the perovskite bandgap because of the strong quantum confinement in perovskite/PbI 2 [77,78] . You et al converted excess PbI 2 into inactive (PbI 2 ) 2 RbCl to reduce the ion migration rates from 4.2 × 10 8 and 3.3 × 10 −3 s −1 at an operating temperature of 50°C [63] , decrease the bandgap of perovskite (the PL peak was red-shifted from 805 to 810 nm), and passivate the perovskite surface to enhance the carrier lifetime from 0.98 to 2.3 μs by doping RbCl into PbI 2 precursor solution. Finally, the optimal device obtained a certificated PCE of 25.6%.…”

Glycol Monomethyl Ether‐Substituted Carbazolyl Hole‐Transporting Material for Stable Inverted Perovskite Solar Cells with Efficiency of 25.52 %

“…[1][2][3] The power conversion efficiency (PCE) of planar IPSCs has jumped from 3.9 % in 2013 [4] to certified 26.1 % in 2023, [5] and the operational stability of IPSCs has exceeded thousands of hours in lab level. [6][7][8] The rapid development of IPSCs benefits from the emergence and application of abundant p-type organic hole-transporting materials (HTMs) including organic small molecules [9][10][11][12] and conjugated conductive polymers, [13][14][15] which can replace the traditional inorganic HTMs, such as nickel oxide (NiO X ), [16] cuprous oxide (Cu 2 O) [17] and copper thiocyanate (CuSCN). [18] Compared with organic conjugated conductive polymer HTMs, small molecular HTMs have the superior batch stability and the variously tailored chemical structures to form a self-limiting functional layer on transparent conductive oxide electrode (TCO) substrate by forming chemical bond, and thus catering the requirements of constructing high performance PSCs [6][7][8][9][10][11][12] (such as forming the matched energy band structure at perovskite/hole-transporting layer (HTL) interface, regulating perovskite crystallization and growth, passivating interface/surface defects and releasing interface strain, etc.…”