Thiophene polymer, preparation method thereof, semiconductor composition including same, and solar cell using same
A technology of polymers and compositions, which is applied in semiconductor devices, semiconductor/solid-state device manufacturing, circuits, etc., can solve the problems of spectral response range, radiation spectrum mismatch, low carrier mobility, and unstable electrical properties. Achieve the effects of improving π-π stacking performance, high carrier mobility, and high degree of conjugated π overlap
Active Publication Date: 2016-08-24
HUANENG CLEAN ENERGY RES INST +1
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Problems solved by technology
[0004] However, compared with inorganic semiconductor solar cells, the photoelectric conversion efficiency of polymer solar cells is not high enough, and the electrical performance is not stable enough.
The long-term research results of chemists and material scientists show that the main factors restricting the photoelectric conversion efficiency of polymer solar cells include: the spectral response range of the battery does not match the radiation spectrum of sunlight to the ground, and the mobility of carriers is not high. And the collection efficiency of the electrode to the carrier is low, etc.
Method used
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Embodiment 1
[0083] (1) Synthesis of 2,5-bis(trimethyltinyl)-6,7-bis(isooctyloxy)-cyclopentadithiophene silicon
[0084] Synthetic route such as image 3 Shown, concrete reaction steps and technology are as follows:
[0085] Step 1: Dissolve 16.3g, 0.10mol of 2-bromothiophene in 150mL of tetrahydrofuran, and add 40ml of 2.5mol / L lithium diisopropylamide (LDA) / tetrahydrofuran solution dropwise within 5 minutes at -78°C into the above reaction system. After reacting for 1 hour, add 0.5g cupric chloride (CuCl 2 ), and the system was warmed up to 40° C., and reacted for 12 hours. After the reaction was completed, 100 mL of dilute hydrochloric acid with a concentration of 3 mol / L was added into the reaction system to quench the reaction. The organic phase of the mixture was extracted twice more with dichloromethane. The two extracted organic phases were combined and dried over anhydrous magnesium sulfate to obtain a crude product. The crude product was rinsed with petroleum ether to obtai...
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Abstract
The invention discloses a thiophene polymer, its preparation method, a semiconductor composition containing it, and a solar cell using it. The molecular structure of the thiophene polymer is represented by a formula I. In the formula I, n is 5-500; R1 and R2 are respectively independently selected from hydrogen and C1-C30 alkyl groups; and A is a non-substituted or substituted vinylidene group, an ethynylene group, a monocyclic arylidene group, a dicyclic arylidene group, a polycyclic arylidene group, a monocyclic heteroarylidene group, a dicyclic heteroarylidene group, a polycyclic heteroarylidene group, or a group formed by sequentially connecting 2-6 arylidene groups through one or more single bonds. The thiophene polymer introduces a silicon atom to a cyclopentyldithiophene unit. The cyclopentyldithiophene unit formed by adopting the silicon atom has better flatness than the cyclopentyldithiophene unit formed by adopting other atoms. The pi-pi bulk performance among conjugated polymer molecules is improved, so the conjugated pi overlapping degree among the molecules is high, thereby the above polymer material has a high carrier mobility.
Description
technical field [0001] The invention relates to the field of polymer solar cells, in particular to a thiophene polymer, a preparation method thereof, a semiconductor composition comprising the same and a solar cell using the same. Background technique [0002] Solar energy is an inexhaustible clean energy. Today, with the depletion of petrochemical energy and increasingly serious environmental pollution, solar cells that can convert solar energy into electrical energy have become a research hotspot that countries are particularly concerned about. Among different types of solar cells, organic solar cells (such as polymer solar cells) have become an important category of solar cells because of their outstanding advantages such as light weight, low cost, and the ability to be made into flexible large-area devices. [0003] Throughout the development history of polymer solar cells, it is not difficult to find that the molecular structure of polymer materials in high-efficiency ...
Claims
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IPC IPC(8): C08G61/12C08L65/00C08K3/04C08K5/00H01L51/46
CPCY02E10/549
Inventor 赵志国殷亮王一丹彭文博刘大为邬俊波
Owner HUANENG CLEAN ENERGY RES INST