Acidochromic organic photovoltaic integrated device
Journal article, 2023
Tremendous efforts have been devoted to boosting the power conversion efficiency (PCE) of organic solar cells (OSCs) via the introduction of cathode interlayers (CILs). However, CIL materials have limited diversity and the development of multifunctional devices is largely neglected. Herein, an acidochromic organic photovoltaic integrated device is firstly proposed by introducing an acid-sensitive stimulating-reaction organic molecule as both the CIL of OSCs and the sensor of monitoring environmental acidity. The oxazolidine unit of acidochromic molecule can form a ring-opening structure after acid treatment, resulting in the remarkable color change with the direct reflection of pH value of ecological environment. The additive-free PM6:Y6 OSCs using the acidochromic molecule as the CIL achieve an excellent PCE of above 15.29 %, which is 47 % higher than that of the control device. The PCE can even maintain above 92 % after treating CIL with various strong acids (pH = 1). Moreover, the color of acidified films and the degraded performance of acidified OSCs can be easily restored by alkaline treatment. The successful application of CIL in other highly efficient photovoltaic systems proves its good universality. This work triggers the promising application of acidochromic molecules in solar cells as CIL with the additional function of recognition of acid environment.
Acidification
Organic solar cell
Ring-opening reaction
Integrated device
Acidochromic
Author
[Person a8761632-0c8a-48a4-adfd-494e127aac02 not found]
Jinan University
[Person 47389234-56fb-4a6f-92fa-0464e4cfd951 not found]
Jinan University
Jilin University
Chalmers, Chemistry and Chemical Engineering, Applied Chemistry
[Person 65c8fcfa-e305-43bc-80df-76b7fcfee879 not found]
Southeast University
Jinan University
[Person 97aaddef-7766-49e8-8228-751d6b5904b2 not found]
Jinan University
[Person c9bf5601-32bd-4212-9899-fa2638fb2052 not found]
Jinan University
Xi'an University of Science and Technology
[Person c48fcc47-8c3a-41ec-84f9-cabe48d60617 not found]
Jinan University
[Person e7dcb504-c7af-4e5b-af43-5904ae015ccb not found]
Jinan University
[Person 60a90875-4688-422f-93ce-367629bd734a not found]
Jinan University
[Person 4e8c0463-a1c0-412c-b9bc-0aa5ec0f5b6b not found]
Jilin University
[Person 6878387f-9a6a-4c73-a47c-c879c3f2e211 not found]
Southeast University
[Person 121d4600-88f6-4a6d-a602-8dafdd837216 not found]
Chalmers, Chemistry and Chemical Engineering, Applied Chemistry
[Person 6239efa7-5777-4336-98cb-91996730648d not found]
Jinan University
Chemical Engineering Journal
1385-8947 (ISSN)
Vol. 452 139479Next Generation Organic Solar Cells (OPV 2.0)
Swedish Research Council (VR) (2016-06146), 2017-01-01 -- 2022-12-31.
Swedish Research Council (VR) (2016-06146), 2017-01-01 -- 2022-12-31.
Swedish Research Council (VR) (2016-06146), 2017-01-01 -- 2022-12-31.
Understanding the fundamentals of light emitting electrochemical cells
Swedish Research Council (VR) (2019-02345), 2020-01-01 -- 2025-12-31.
Subject Categories (SSIF 2011)
Polymer Chemistry
Textile, Rubber and Polymeric Materials
Other Chemistry Topics
Driving Forces
Sustainable development
Areas of Advance
Energy
DOI
10.1016/j.cej.2022.139479