Boosting the Power Conversion Efficiency of Perovskite Solar Cells Using Self‐Organized Polymeric Hole Extraction Layers with High Work Function

Abstract

A self-organized hole extraction layer (SOHEL) with high work function (WF) is designed for energy level alignment with the ionization potential level of CH3 NH3 PbI3 . The SOHEL increases the built-in potential, photocurrent, and power conversion efficiency (PCE) of CH3 NH3 PbI3 perovskite solar cells. Thus, interface engineering of the positive electrode of solution-processed planar heterojunction solar cells using a high-WF SOHEL is a very effective way to achieve high device efficiency (PCE = 11.7% on glass).

Two-dimensional organic-inorganic hybrid perovskite: from material properties to device applications

“…Perovskite solar cells (PeSCs) and perovskite light-emitting diodes (PeLEDs) are divided into PIN type and NIP type according to preparation order of hole transport layer (HTL)/perovskite layer/electron transport layer (ETL) or ETL/perovskite layer/HTL. In the PeSCs, Figure 1 Structure diagrams of 3D perovskite lattices [7]: (a) MX 6 regular octahedral structure; (b) AX 12 cubic octahedral structure. (c) The structure diagram of 2D perovskite crystals [8]; (d) perovskite lattices with different dimensions (n=∞, 3D structure; n=1, pure 2D structure; and n=defined integer, quasi-2D structure).…”

Understanding Film Formation Morphology and Orientation in High Member 2D Ruddlesden–Popper Perovskites for High‐Efficiency Solar Cells

“…This device structure has been demonstrated to deliver highefficiency with negligible hysteresis for both 3D and 2D perovskite solar cells. [4,25,[50][51][52] The cells were fabricated from 0.225-0.25 M Pb 2+ precursor solutions with DMF, DMSO, or mixed solvents by hot-casting at 110 °C under inert atmosphere, and yielding average film thicknesses of 200 ± 10 nm, as determined by profilometry. Device current density-voltage (J-V) plots under standard AM1.5G illumination (air mass 1.5 global 1-Sun) are shown in Figure 5b, and the data are compiled in Table S1 , and FF = 65.5%.…”

Long term stability of air processed inkjet infiltrated carbon-based printed perovskite solar cells under intense ultra-violet light soaking

“…6,7 Therefore several types of new materials, strategies and device geometries have been introduced to address the aforementioned issues. 8,[12][13][14][15][16] As a result of these contributions, one class of PSCs i.e. carbon back contact based printable perovskite solar cells (CPSCs) [16][17][18][19] have emerged as a potential candidate which may be produced at low cost due to several factors.…”