Abstract
AbstractHalide perovskites have undergone an impressive development and could be used in a wide range of optoelectronic devices, where some of them are already at the edge of commercialization, e.g., perovskite solar cells. Recently, interest in perovskites in powder form has increased, as for example, they are found to exhibit high stability and allow for easy production of large quantities. Accordingly, also the topic of processing thin and thick films on the basis of perovskite powders is currently gaining momentum. Here, perovskite powder can form the basis for both, typical wet and solvent‐based processing approaches, as well as for dry processes. In this Progress Report, the recent developments of halide perovskites in powder form and of film processing approaches are summarized that are based on them. The advantages and opportunities of the different processing methods are highlighted, but their individual drawbacks and limitations are also discussed. Prospects are also pointed out and possible steps necessary to unlock the full potential of powder‐based processing methods for producing high quality thick and thin perovskite layers in the future are discussed.
Highlights
Besides the many advantages of these processing methods such as potential for low cost, ability for upscaling, compatibilityAfter more than a decade of intense research, the excitement with flexible substrates, etc., some disadvantages were about halide perovskites, which was triggered among other inherited
We show the current limitations of the methods but will highlight the advantages and opportunities of powder-based halide perovskite processing, which might become a more and more important processing method in the future
We will discuss methods where the perovskite structure undergoes a dissolution and subsequent recrystallizes in the course of the dry processing, which is the case for physical vapor deposition (PVD) approaches and for melt processing (3.1 and 3.2)
Summary
Besides the many advantages of these processing methods such as potential for low cost, ability for upscaling, compatibility. The device efficiencies of solutionthings by two reports on solid-state perovskite solar cells in processing methods that are compatible with technological. 2012,[1,2] seems to be unbroken This is quite justified, since upscaling such as slot die coating are still lower than the device perovskite-based solar cells,[3] as well as perovskite-based efficiencies of the corresponding components produced by spin. While the challenge in organic semiconductor processing show significantly higher sensitivities than many of their com- is to deposit the already synthesized molecules or polymers mercially established detector material counterparts.[6,7,8] Halide in the desired conformation in the condensed film state, the processing of halide perovskite is based on its precursor com-. Powder-based processing in general is well known in the field of ceramics or metals,[12,13] and corresponding processing approaches are established in the industrial context.
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