Polymer solar cell based on AZO/ZnO cathode and manufacturing method of polymer solar cell

Abstract

The invention discloses a polymer solar cell based on an AZO / ZnO cathode and a manufacturing method of the polymer solar cell. The manufacturing method comprises the following steps that (1) a substrate is washed, (2) a ZnO electron transfer layer is deposited, (3) a P3HT: PCBM organic light active layer is deposited, (4) pre-annealing is conducted, (5) a MoO3 hole transfer layer is deposited, and (6) an Ag metal anode is deposited. The ZnO electron transfer layer is prepared according to a low-temperature water solution method, the work function of an AZO electrode is lowered through the ZnO electron transfer layer, energy level matching between AZO and P3HT: PCBM is achieved, the interface characteristic is improved, energy loss is reduced, and the energy conversion efficiency of the polymer solar cell of a reversed structure is effectively improved.

Description

technical field

[0001] The invention relates to the field of solar cells, in particular to a polymer solar cell based on an AZO / ZnO cathode and a preparation method thereof. Background technique

[0002] In today's society, the rapid economic development has brought serious problems such as energy crisis and global warming. The development and utilization of renewable clean energy has attracted widespread attention from all over the world. Different from traditional energy sources such as coal, oil, and natural gas, solar energy is a green, clean, and renewable energy source that is inexhaustible and has the potential to become an important part of future energy supply. As a photoelectric conversion device, solar cells have received more and more attention in their research and application. Compared with expensive silicon-based solar cells, polymer solar cells use organic semiconductor materials as the photoactive layer, which has the characteristics of low cost, high light...

Examples

Embodiment 1

[0033] Step 1: Clean the substrate substrate

[0034] The AZO glass substrate was ultrasonically cleaned in deionized water, acetone, absolute ethanol and deionized water for 15 min in turn, and dried with a nitrogen gun after cleaning. The thickness of glass is about 1.9mm, the thickness of AZO is about 980nm, and the sheet resistance is about 10Ω / □.

[0035] Step 2: Deposit ZnO electron transport layer

[0036] a) Prepare ZnO precursor solution: dissolve 150mg of ZnO powder (particle size less than 5 microns) in 15ml of ammonia water (concentration 25%wt), put it in the refrigerator after ultrasonic vibration for 3-5min, the temperature is 0-10℃, time Be 24h, obtain the ZnO precursor solution that concentration is 0.125M;

[0037] b) Spin-coat the ZnO precursor solution on the AZO, the spin-coating speed is 3000r / min, and the time is 40s; then anneal in an oven for 30min, the temperature is 150°C, and the thickness of the obtained ZnO electron transport layer is about 10nm...

Embodiment 2

[0050] Step 1: Clean the substrate substrate

[0051] The AZO glass substrate was ultrasonically cleaned in deionized water, acetone, absolute ethanol and deionized water for 15 min in turn, and dried with a nitrogen gun after cleaning. The thickness of glass is about 2mm, the thickness of AZO is about 980nm, and the sheet resistance is about 10Ω / □.

[0052] Step 2: Deposit ZnO electron transport layer

[0053] a) Prepare ZnO precursor solution: dissolve 150mg of ZnO powder (particle size less than 5 microns) in 15ml of ammonia water (concentration 25%wt), put it in the refrigerator after ultrasonic vibration for 3-5min, the temperature is 0-10℃, time Be 24h, obtain the ZnO precursor solution that concentration is 0.125M;

[0054] b) Spin-coat the ZnO precursor solution on the AZO, the spin-coating speed is 3000r / min, and the time is 40s; then anneal in an oven for 60min, the temperature is 100°C, and the thickness of the obtained ZnO electron transport layer is about 10nm; ...

technical field

[0001] The invention relates to the field of solar cells, in particular to a polymer solar cell based on an AZO / ZnO cathode and a preparation method thereof. Background technique

[0002] In today's society, the rapid economic development has brought serious problems such as energy crisis and global warming. The development and utilization of renewable clean energy has attracted widespread attention from all over the world. Different from traditional energy sources such as coal, oil, and natural gas, solar energy is a green, clean, and renewable energy source that is inexhaustible and has the potential to become an important part of future energy supply. As a photoelectric conversion device, solar cells have received more and more attention in their research and application. Compared with expensive silicon-based solar cells, polymer solar cells use organic semiconductor materials as the photoactive layer, which has the characteristics of low cost, high light...

Examples

Embodiment 1

[0033] Step 1: Clean the substrate substrate

[0034] The AZO glass substrate was ultrasonically cleaned in deionized water, acetone, absolute ethanol and deionized water for 15 min in turn, and dried with a nitrogen gun after cleaning. The thickness of glass is about 1.9mm, the thickness of AZO is about 980nm, and the sheet resistance is about 10Ω / □.

[0035] Step 2: Deposit ZnO electron transport layer

[0036] a) Prepare ZnO precursor solution: dissolve 150mg of ZnO powder (particle size less than 5 microns) in 15ml of ammonia water (concentration 25%wt), put it in the refrigerator after ultrasonic vibration for 3-5min, the temperature is 0-10℃, time Be 24h, obtain the ZnO precursor solution that concentration is 0.125M;

[0037] b) Spin-coat the ZnO precursor solution on the AZO, the spin-coating speed is 3000r / min, and the time is 40s; then anneal in an oven for 30min, the temperature is 150°C, and the thickness of the obtained ZnO electron transport layer is about 10nm...

Embodiment 2

[0050] Step 1: Clean the substrate substrate

[0051] The AZO glass substrate was ultrasonically cleaned in deionized water, acetone, absolute ethanol and deionized water for 15 min in turn, and dried with a nitrogen gun after cleaning. The thickness of glass is about 2mm, the thickness of AZO is about 980nm, and the sheet resistance is about 10Ω / □.

[0052] Step 2: Deposit ZnO electron transport layer

[0053] a) Prepare ZnO precursor solution: dissolve 150mg of ZnO powder (particle size less than 5 microns) in 15ml of ammonia water (concentration 25%wt), put it in the refrigerator after ultrasonic vibration for 3-5min, the temperature is 0-10℃, time Be 24h, obtain the ZnO precursor solution that concentration is 0.125M;

[0054] b) Spin-coat the ZnO precursor solution on the AZO, the spin-coating speed is 3000r / min, and the time is 40s; then anneal in an oven for 60min, the temperature is 100°C, and the thickness of the obtained ZnO electron transport layer is about 10nm; ...

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