A kind of p-type doped halide perovskite semiconductor and preparation method thereof

Abstract

The invention belongs to the field of halide perovskite semiconductors, in particular to a P-type doped halide perovskite semiconductor and a preparation method thereof. The semiconductor is produced by ABX 3 Type halide perovskite or its derivatives and P-type dopant; wherein the P-type dopant is composed of positive monovalent cation D A , Positive monovalent cation D DB , Negative monovalent anion D X , halogen or pseudohalogen atom D DX Composition; D A Grown on the A site of perovskite or its derivatives, D DB As a doping element, it grows on the B site of perovskite or its derivatives, and causes perovskite or its derivatives to generate X site vacancies, D X Occupying the X site of perovskite or its derivatives, D DX As a doping element occupying the doping element D DB leads to a vacancy in X and leads to ABX 3 Type halide perovskite or its derivatives generate holes to form P-type doped halide perovskite semiconductor. The invention breaks through the short board of the P-type lattice doped halide perovskite semiconductor, and facilitates the further development of halide perovskite semiconductor electronic / optoelectronic devices.

Description

technical field [0001] The invention belongs to the field of halide perovskite semiconductors, and more specifically relates to a P-type doped halide perovskite semiconductor and a preparation method thereof. Background technique [0002] Materials, energy, and information are the three cornerstones of the progress of human society. The emergence and application of semiconductor materials have greatly promoted the development of human society. On the one hand, semiconductor materials are widely used in the information field, such as chips and display panels that rely on transistors, and various detectors that rely on semiconductors; on the other hand, semiconductor materials can also be used in the energy field represented by solar cells. The development and application of solar cell technology has an extremely important strategic position for the acquisition of clean and sustainable energy. Since the emergence of semiconductor technology, silicon semiconductor materials ar...

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Problems solved by technology

Another idea is to learn from crystal semiconductor doping technology and introduce lattice dopants to achieve the goal of doping. Researchers have also done a lot of exploration along this idea, such as trying to introduce AgI, but the introduction of AgI failed to achieve effective doping, but instead introduced more defect recombination centers in the halide perovskite half

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