Efficiency progress of inverted perovskite solar cells

Abstract

Inverted perovskite solar cells (IPSCs) have attracted great attention in recent years due to reliable operational stability, negligible hysteresis and low-temperature fabrication process. To accelerate its commercialization, the focus of...

Benzothiadiazole-based photosensitizers for efficient and stable dye-sensitized solar cells and 8.7% efficiency semi-transparent mini-modules

“…During the past two decades, tremendous efforts have been focused on the development of photovoltaic (PV) technologies capable of palliating some of the drawbacks of conventional silicon-based solar panels such as heaviness, opaqueness and large energy consumption during manufacturing. 1,2 Technologies integrating organic and hybrid materials such as Dye-Sensitized Solar Cells (DSSCs), 3,4 Bulk-Hetero-Junction solar cells (BHJ), [5][6][7] or Perovskite Solar Cells (PSC) 8,9 have progressed signicantly. Nowadays they appear to be adapted to solve some of these drawbacks.…”

A Cost‐Effective D‐A‐D Type Hole‐Transport Material Enabling 20% Efficiency Inverted Perovskite Solar Cells†

“…[ 5 ] Although most of the high efficiency was achieved by the n–i–p structures, such devices usually suffer from severe hysteresis. [ 6 ] Additionally, Li + dopants for improving the conductivity of Spiro‐OMeTAD bring adverse effects on device ambient stability. [ 7 ] By contrast, the p–i–n structures have several distinctive advantages, including reduced hysteresis and low‐temperature processing.…”

“…[ 7 ] By contrast, the p–i–n structures have several distinctive advantages, including reduced hysteresis and low‐temperature processing. [ 6 ] The p–i–n structures also offer opportunities for integrating PVSCs on silicon solar cells. [ 4a ] However, the device performance of inverted PVSCs lags behind those of conventional PVSCs.…”

Orientation‐Engineered Small‐Molecule Semiconductors as Dopant‐Free Hole Transporting Materials for Efficient and Stable Perovskite Solar Cells

“…[ 8,13 ] However, the utilization of the hydroscopic additives such as 4‐ tert ‐butylpyridine ( t ‐BP) and lithium bis(trifluoromethanesulfonyl)imide (Li‐TFSI) to improve the hole conductivity of spiro‐OMeTAD and PTAA normally leads to severe operational stability and reproducibility problems for conventional PSC devices. [ 14–15 ] In contrast, PSCs with inverted (p–i–n) device structures hold great promise for future commercialization due to their excellent device stability, negligible hysteresis, and low‐cost production. [ 15–18 ] The superior device stability of inverted PSCs is actually attributed to the use of the pristine HTM with a thin film thickness.…”

“…[ 14–15 ] In contrast, PSCs with inverted (p–i–n) device structures hold great promise for future commercialization due to their excellent device stability, negligible hysteresis, and low‐cost production. [ 15–18 ] The superior device stability of inverted PSCs is actually attributed to the use of the pristine HTM with a thin film thickness. [ 17,19 ] However, the inverted PSCs generally exhibit unimpressive efficiency compared to the start‐of‐the‐art conventional (n–i–p) devices.…”