Perovskite Materials

The discovery of perovskite crystals in the Ural Mountains in the 19th century was followed by the discovery of metal halide perovskites some 50 years later.

Wide bandgap (WBG) perovskites are a subset of perovskite semiconductor materials. These perovskite materials are characterized by a bandgap energy (Eg) >1.7 eV.

Methylammonium lead iodide (MAPbI3) was one of the first perovskite materials used in perovskite solar cells. These crystal structures combine the organic A cation methylammonium (MA+, CH3NH3+) and divalent lead (Pb+) with three iodide anions (I-).

Formamidinum lead iodide (FAPbI3) is a material used for perovskite solar cells. FAPbI3 was introduced in 2014 as an alternative to MAPbI3 (Eperon 2014).

This guide describes our recommended fabrication routine for perovskite solar cells using Ossila I101 Perovskite Precursor Ink which is designed to be used with a bottom ITO/PEDOT:PSS anode and a top PC70BM/Ca/Al cathode.

This article aims to introduce some methods that have been adapted to improve perovskite solar cell stability.

Perovskite solar cells show impressive efficiencies and offer “a different kind of solar cell” that could be cheap to manufacture and could be semi-transparent, lightweight, and flexible.

2D perovskites are perovskite materials with a layered crystal structure. They are made up of metal-halide sheets, separated by large organic cations called spacers.

Perovskite solar cells have demonstrated impressive device metrics, including open-circuit voltages of up to 1.2V. However, in order for PSCs to achieve their theoretical best efficiencies, all non-essential recombination pathways should be eliminated.

A condensed summary of our fabrication routine for standard architecture devices using our I301 Triple Cation Perovskite Precursor Ink. This recipe is based on the one described by Saliba et al (2018).

Our technical support team receive enquiries about perovskite solar cell or photovoltaic fabrication on a regular basis. For your convenience, we've collated some of the most common questions here which you may find helpful when using I101 or I201 perovskite precursor inks.

This video is a guide on how to make perovskite films when processed inside a nitrogen filled glove box. The resultant devices achieve efficiencies greater than 19% PCE.

This video provides a guide to making efficient air-processed perovskite devices.

This video details the effects humidity has on air-processed perovskite films.

>Over the last two decades, quantum dots have elicited a considerable amount of excitement and attention from both research scientists and the media. When Sony launched their XBR line of televisions in 2013, quantum dots successfully moved from pure research into the commercial sphere. Despite this, there are still some barriers to overcome before we can expect to see widespread adoption of quantum dot-based products.

Synthesising high quality quantum dots (QDs) can be a complex process. Two major routes to the synthesis have now been developed: room temperate synthesis and synthesis by hot injection.

Perovskite Tandem Solar Cells

Perovskite tandem solar cells are a hot topic for soalar researchers due to their potential for achieving high efficiencies at lower costs. These cells have garnered significant attention, especially after LONGi Solar set a record efficiency of 33.9%. This achievement has popularized perovskite tandem solar cells and motivated ongoing research.

Incorporating self-assembled monolayers (SAMs) within perovskite solar cells has improved device efficiency. SAMs exist as ultrathin layers that can be engineered to improve various aspects of the solar cell including charge transport and stability. SAMs have benefits including:

Perovskite LEDs (light emitting diodes), often abbreviated to PeLEDs, use a perovskite material layer to emit light. PeLEDs have many benefits over the common OLED (organic light emitting diodes) and QLED (quantum dot light emitting diodes) alternatives.

Molecular engineering is simply the design and synthesis of molecules with specific properties and functions in mind. Certain chemical groups and atoms incorporated into molecules results in them having certain characteristics.

Two commonly used materials for hole selective layer (HSL) or hole transport layer (HTL) are PEDOT:PSS (poly(3,4-ethylenedioxythiophene) polystyrene sulfonate) and self-assembled monolayers (SAMs). Each offers distinct advantages and limitations that impact their effectiveness in solar cells.

Molecular electronics or "moletronics" is to use molecules as building blocks to create electronic components. These molecular electronic components include transistors, diodes, capacitors, insulators, and wires.