Organic solar cell, preparation method of organic solar cell and method of improving light absorption efficiency of organic solar cell

• Main Authors: LI XIAOWEI, YANG QIMAN, YANG SHAOPENG, FU GUANGSHENG, WANG TIENING
• Format: Patent
• Language: Chinese; English
• Published: 12.06.2013
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION; SEMICONDUCTOR DEVICES; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

The invention discloses an organic solar cell, a preparation method of the organic solar cell and a method of improving light absorption efficiency of the organic solar cell. The organic solar cell comprises a glass substrate, a positive electrode layer, a hole transfer layer, an organic active layer and a negative electrode layer, wherein a liquid crystal reflecting layer is added outside the negative electrode layer, the liquid crystal reflecting layer comprises a half wave plate carrier and a liquid crystal membrane which is coated on the half wave plate carrier, and the liquid crystal material of the liquid crystal membrane is composed of 90wt%-99wt% of LC242 and 1wt%-10wt% of LC756. Light absorption of the organic active layer is increased by adding the liquid crystal reflecting layer, a wave band of reflection spectrum of the liquid crystal membrane is enabled to be matched with a main wave band of absorption spectrum of the organic active layer by selecting the proper liquid crystal reflecting layer, a