Assembling Mesoscale‐Structured Organic Interfaces in Perovskite Photovoltaics

Abstract

Mesoscale‐structured materials offer broad opportunities in extremely diverse applications owing to their high surface areas, tunable surface energy, and large pore volume. These benefits may improve the performance of materials in terms of carrier density, charge transport, and stability. Although metal oxides–based mesoscale‐structured materials, such as TiO2, predominantly hold the record efficiency in perovskite solar cells, high temperatures (above 400 °C) and limited materials choices still challenge the community. A novel route to fabricate organic‐based mesoscale‐structured interfaces (OMI) for perovskite solar cells using a low‐temperature and green solvent–based process is presented here. The efficient infiltration of organic porous structures based on crystalline nanoparticles allows engineering efficient “n‐i‐p” and “p‐i‐n” perovskite solar cells with enhanced thermal stability, good performance, and excellent lateral homogeneity. The results show that this method is universal for multiple organic electronic materials, which opens the door to transform a wide variety of organic‐based semiconductors into scalable n‐ or p‐type porous interfaces for diverse advanced applications.

Influence of Thiazole-Modified Carbon Nitride Nanosheets with Feasible Electronic Properties on Inverted Perovskite Solar Cells

“…Interfacial solution-processed layers have played an essential role in modern electronic devices, for instance, to enable further advances in the field of perovskite solar cells (PVSCs). − This is possibly useful to diminish the recombination at the interfaces and increase photovoltaic performance. , At the same time, it is key to reduce manufacturing costs with alternative systems. − Hybrid organic–inorganic halide perovskite-based systems are some of the most promising photovoltaic technologies, − which is due to a whole number of superior physical key properties, such as low exciton binding energy , and high charge carrier mobility. − These outstanding features have boosted the overall photovoltaic efficiency in PVSCs. − …”

Visualizing and Suppressing Nonradiative Losses in High Open-Circuit Voltage n-i-p-Type CsPbI3 Perovskite Solar Cells

“…Surface passivation with PCBM is a common and effective method to reduce interface defects in PSCs . However, the black-phase CsPbI 3 is usually formed at temperatures above 300 °C, which is higher than the melting temperature of PCBM .…”

The Nano-Scale Modified BaTiO3 Morphology Influence on Electronic Properties and Ceramics Fractal Nature Frontiers

“…The processing-property-structure relation is of great importance for designing ceramic materials, samples with full control on grains, pores and their bilayers in between the grains and pores as ceramic structures constituents. Electronic properties of ceramics have put them on the top of the materials used for sensors, actuators, capacitors and other parts integrated in electronic devices [1][2][3][4]. Ferroelectric perovskite ceramics have been intensively studies over the years, from a macro towards a nano-scale approach [5][6][7][8].…”