Bismuth iodine cluster hybrid semiconductor perovskite material based on 1-butyl-4-methylpyridinium cation
A technology of methyl pyridinium cation and perovskite material, applied in semiconductor devices, semiconductor/solid-state device manufacturing, organic chemistry, etc., can solve problems such as large band gap, achieve moderate band gap, improve light absorption performance, Ease of purification
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Embodiment 1
[0027] Bulk perovskite-like materials (BMPY) 3 (Bi 2 I 9 ) Preparation of powder sample: Weigh 117.9mg (0.2mmol) of BiI 3 , 83mg (0.5mmol) of KI, 92.8mg (0.5mmol) of 1-butyl-4-methylpyridinium chloride; respectively dissolved in 5ml of acetonitrile and mixed in sequence, fully stirred to make it fully react, to obtain a reddish-brown color The solution was clarified; the above solution was rotary evaporated under reduced pressure at 35°C to remove all solvents, washed with water and ethanol several times, and then dried to obtain a reddish-brown powder product with a yield of 83%.
Embodiment 2
[0029] Synthetic perovskite-like materials (BMPY) 3 (Bi 2 I9 ) single crystal: Weigh 117.9mg (0.2mmol) of BiI 3 , 83mg (0.5mmol) of KI, 92.8mg (0.5mmol) of 1-butyl-4-methylpyridinium chloride; respectively dissolved in 5ml of acetonitrile and mixed in turn, fully stirred to fully react to obtain a reddish-brown color The solution was clarified; after filtration, the upper layer of the solution was covered with n-hexane to promote the crystallization of the product, and after standing for a few days, a large number of reddish-brown block crystals were precipitated. A reddish-brown bulk crystal with a size of 0.18mm×0.05mm×0.04mm was selected for X-ray single crystal structure test. The molecular structure of the compound is shown in the attached figure 1 , and its unit cell packing structure is shown in the attached figure 2 .
[0030] Pair of perovskite-like materials (BMPY) 3 (Bi 2 I 9 ) of the pure-phase powder samples were subjected to a series of performance tests...
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