PATENT CLAIM ANALYSIS

Application Number: 15944694
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2018-08
Patent Classification: ["438", "082000"]

Abstract:
The present disclosure relates to perovskite thin film low-pressure chemical deposition equipment and a usage method thereof, and application of the usage method. The equipment comprises a main chamber, wherein two precursor heating plates and a substrate holddown groove are respectively arranged in the main chamber, the precursor heating plates are respectively provided with precursor containers, a plurality of groups of substrates on which a thin film is to be deposited are arranged on the substrate holddown groove, each group is provided with two substrates which are tightly attached back to back, and the surface of each of the two substrates on which a thin film is to be deposited faces towards one end of the main chamber; the left and right ends of the main chamber respectively communicate with carrier gas pipelines provided with carrier gas inlet mass flow control valves, the main chamber also communicates with a vacuum providing unit, and the main chamber is also provided with a main chamber heater for heating the substrates; and the carrier gas pipelines on the two ends respectively communicate with solvent evaporators. By adopting simultaneous introduction of the gas from the two ends of the main chamber and the substrate back-to-back configuration mode, the rate of preparing the perovskite thin film by the method is doubled as compared with the existing methods.

Claim (Index 7):
A method of using the perovskite thin film low-pressure chemical deposition equipment of  claim 2  to form a perovskite film, comprising the following steps:\n (i) preparation of BX 2  layer \n depositing a BX 2  layer having a thickness of 100 nm-1000 nm on the surface at one side of the substrates, wherein B is at least one cation of lead, tin, tungsten, copper, zinc, gallium, germanium, arsenic, selenium, rhodium, palladium, silver, cadmium, indium, antimony, osmium, iridium, platinum, gold, mercury, thallium, bismuth and polonium; X is at least one anion of iodine, bromine, chlorine and astatine; \n (ii) preparation of perovskite layer \n putting the substrates on which the BX 2  is deposited in the step (ii) into the substrate holddown groove of the main chamber, wherein the surfaces without any deposited thin film on the two substrates are attached to each other back to back, and the surfaces with the deposited thin film respectively face towards one end of the main chamber respectively; \n adding a reactant AX into the precursor containers, wherein A is at least one of amine, amidino or alkali family; \n starting the vacuum providing unit so that the pressure in the main chamber is 10 \u22125  Pa-10 5  Pa; \n preheating the main chamber so that the temperature of the main chamber is 50-250\u00b0 C.; \n switching on the precursor heating plates, controlling the temperature of the precursor heating plates so that the temperature of precursor heating plates temperature regions is 10-100\u00b0 C. higher than that of a substrate temperature region of the substrate holddown groove, and holding the reaction process for 5-120 minutes; \n opening the carrier gas inlet mass flow control valves, and regulating the gas input of the main chamber so that the thin film on the surface of the substrate-starts the chemical reaction, wherein the type of carrier gas is at least one of nitrogen, helium and argon; \n 3-100 minutes after the chemical reaction is started, introducing solvent vapor into the main chamber by using the solvent evaporators, wherein the solvent includes methanol, ethanol, isopropanol, ethylene glycol, dimethyl sulfoxide, N,N-dimethylformamide, y-butyrolactone, or N-methyl-2-pyrrolidone, the evaporation temperature of the solvent is controlled at 50-150\u00b0 C., and the duration time is 5-100 minutes; \n (iii) annealing treatment \n removing the residual reactant AX in the precursor containers, heating the substrates in the main chamber to 50-250\u00b0 C. within 5-60 minutes under the vacuum degree of 1 Pa-10 \u22125  Pa; and after the heating, slowly introducing at least one of nitrogen, helium and argon into the main chamber through the carrier gas pipelines, and waiting until the main chamber cooled.

Metadata:
- Claim Count in Document: 14.0
- Percentile: 91.0
- Lexical Diversity: 2.45833
- Patent Class: 438.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15753519', '14515135', '11096159', '15323823', '13185401']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8373601678254888
- 35 USC 102 Novelty (BERT): 0.4861162644184851
- Combined Prediction Score: 0.8022357774847886
- Mean Citation Score: 190.212136
- Max Citation Score: 196.30801
- Similarity Product: 147.62250688265024

Labels:
- Claim Label 101: 0
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 0
- Combined Label: 0
- Label 101 Adjusted: 0

Dataset: test