Solar battery based on inorganic bulk heterojunction and preparation method thereof
A technology of solar cells and bulk heterojunctions, applied in circuits, photovoltaic power generation, electrical components, etc., can solve problems such as unfavorable energy transfer of absorbing materials, unsatisfactory interface contact, unfavorable energy transfer, etc., and achieve great application value and equipment requirements. Low effect and simple preparation method
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[0045] Example 1: TiO 2 Preparation of nanorod array.
[0046] (1-1) Preparation of nanorod array:
[0047] First use 1:1 concentrated HCl-water mixture and Zn powder to etch FTO on FTO conductive glass (FTO thickness is 400 nm, 14 Ω / □) to 16 × 4 mm 2 The thin strips; then ultrasonically cleaned with acetone, isopropanol, and ultrapure water, and dried to obtain treated FTO conductive glass.
[0048] Dissolve 30 mL of concentrated hydrochloric acid in 30 mL of deionized water, stir well, then add 1 mL of butyl titanate and stir for 15 minutes to obtain a reaction solution; place the treated FTO conductive glass face down in the air and place it in 100 mL high pressure In the autoclave, add the pre-prepared reaction solution to the autoclave, seal it and react in an oven at 180°C for 2.5 hours; after the autoclave is cooled to room temperature, take out the sample and rinse with deionized water several times to obtain TiO 2 The initial product of nanorod array; TiO 2 The initial produ...
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[0051] Example 2: Sb 2 S 3 / TiO 2 -Preparation of NA composite membrane.
[0052] (2-1) TiO 2 Preparation of nanorod array: the same as in Example 1.
[0053] (2-2) Sb 2 S 3 / TiO 2 -Preparation of NA composite membrane:
[0054] Put 360 mL of 0.28 M Na 2 S 2 O 3 The solution was cooled in an ice water bath for 20 minutes, after the temperature dropped to about 5 ℃, then the TiO 2 The nanorod array is placed face down on the Na 2 S 2 O 3 In solution; add Na to Na at a rate of 2 mL / min 2 S 2 O 3 Add 40 mL of 0.29 M SbCl dropwise to the solution 3 Acetone solution, keep the Na 2 S 2 O 3 Solution; After the dripping is completed, the reaction is allowed to continue for 6 hours under the condition of ice-water bath cooling to proceed to Sb 2 S 3 Chemical bath deposition. After deposition, remove the TiO 2 The nanorod array sample was rinsed with deionized water several times, and then dried with nitrogen to obtain an orange-red initial product; 2 Annealing under normal pressure at 400 ℃ f...
Example Embodiment
[0058] Example 3: Sb 2 S 3 / TiO 2 -Preparation of NA bulk heterojunction solar cells.
[0059] (3-1) TiO 2 Preparation of nanorod array: the same as in Example 1.
[0060] (3-2) Sb 2 S 3 / TiO 2 -Preparation of NA composite membrane: the same as in Example 2.
[0061] (3-3) Sb 2 S 3 / TiO 2 -Preparation of NA bulk heterojunction solar cells.
[0062] Using freshly distilled chlorobenzene as the solvent, prepare a MEH-PPV solution with a concentration of 5 mg / mL, and stir at room temperature for 24 hours. Disperse 150 μL of MEH-PPV solution evenly in Sb 2 S 3 / TiO 2 -NA composite film, spin coating (1000 rpm, 60 seconds) to deposit MEH-PPV on Sb 2 S 3 / TiO 2 -NA composite membrane; after vacuum drying at 40 ℃ for 6 hours, heat treatment at 150 ℃ for 10 minutes under the protection of nitrogen. 2 S 3 / TiO 2 A MEH-PPV film with a thickness of about 40 nm is formed on the NA composite film as an electron blocking layer. Spin-coating a mixture of PEDOT:PSS and isopropanol (volume ratio 1:1)...
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