Chinese scientists reveal a photovoltaic cell simulator perovskite materials unique charge transport in the quantum interference effect

Editor's note: perovskite materials because of their excellent optoelectronic properties of become a research focus in recent years, materials science, in a short span of 7 years photoelectric conversion efficiency is above 25%. Li Yuelong researchers have designed and synthesized a series of perovskite, such as quantum dots, and relying on the xiamen university professor HongWenJing team has picometers level displacement control accuracy of independent research and development of scientific instruments, the perovskite quantum dots for in situ testing.

perovskite solar battery photoelectric conversion efficiency is above 25% in just seven years, as has more than 40 years development course of traditional crystalline silicon solar cell, with performance research thorough, the mechanism of the scientific research is becoming more and more attention. Recently, Li Yuelong at electronic and optical engineering college of nankai university and xiamen university chemical engineering professor HongWenJing team, the university of Lancaster, colin & middot; Lambert academician cooperation, first reported in the world of perovskite materials in nanoscale charge transport in the quantum interference effect, unique for the preparation of perovskite materials based on quantum effects and device provides a possible, related research results in the recently published online international authoritative journals 'nature & middot; Letters.

perovskite materials because of their excellent optoelectronic properties of become a research focus in recent years, materials science, in areas such as solar cells, leds and photoelectric detector has many successful applications. “ Charge transport process in the perovskite materials is one of the key steps in affecting its performance, the understanding and research of perovskite materials, solar panels, the unique effect of electron transport in the nanoscale, solar portal, the perovskite materials and device design and performance of further ascension has important guiding significance. ” Li Yuelong said.

therefore, Li Yuelong researchers have designed and synthesized a series of perovskite, such as quantum dots, solar power grid, and relying on the xiamen university professor HongWenJing team has picometers level displacement control accuracy of independent research and development of scientific instruments, the perovskite quantum dots for in situ testing. By gold electrodes in perovskite crystal cell, the slip between solar power grid, the researchers realized the distance on the single cell only 5 Amy charge transport between different connection site testing, and accidental observed when the electrode is connected to the same crystal cell different loci, solar power network, the charge transport capacity significantly enhanced with close to an order of magnitude. With colin & middot; Lambert academicians, researchers reveals the conductance of the have not reported enhanced phenomenon, is the result of charge transport through the nanoscale perovskite materials occurs when the quantum interference effect.

the interdisciplinary international cooperation an important breakthrough, success will study quantum interference system to expand to the field of perovskite materials, efficient perovskite to resolve the secret behind the solar cells and other optoelectronic devices, and set up based on the quantum effects of the new high performance new research field of perovskite photoelectric device.

the original title: Chinese scientists reveals the charge transport in perovskite materials unique quantum interference effect