Alkoxybenzothiadiazole-Based Fullerene and Nonfullerene Polymer Solar Cells with High Shunt Resistance for Indoor Photovoltaic Applications
- Authors
- Park, Song Yi; Li, Yuxiang; Kim, Jaewon; Lee, Tack Ho; Walker, Bright; Woo, Han Young; Kim, Jin Young
- Issue Date
- 31-1월-2018
- Publisher
- AMER CHEMICAL SOC
- Keywords
- polymer solar cells; indoor applications; dim light illumination; photovoltaic polymers; shunt resistance; organic photovoltaics
- Citation
- ACS APPLIED MATERIALS & INTERFACES, v.10, no.4, pp.3885 - 3894
- Indexed
- SCIE
SCOPUS
- Journal Title
- ACS APPLIED MATERIALS & INTERFACES
- Volume
- 10
- Number
- 4
- Start Page
- 3885
- End Page
- 3894
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/77926
- DOI
- 10.1021/acsami.7b18152
- ISSN
- 1944-8244
- Abstract
- We synthesized three semicrystalline polymers (PTTBTBO, PDTBTBO, and P2FDTBT(BO)) by modulating the intra- and intermolecular noncovalent Coulombic interactions and investigated their photovoltaic characteristics under various light intensities. Low series (R-s) and high shunt (R-sh) resistances are essential prerequisites for good device properties under standard illumination (100 mW cm(-2)). Considering these factors, among three polymers, PDTBTBO polymer solar cells (PSCs) exhibited the most desirable Characteristics, with peak power conversion efficiencies (PCE) of 7.52 and 9.60% by being blended with PC71BM under standard and dim light (2.5 mW cm(2)), respectively. P2FDTBT(BO) PSCs exhibited a low PCE of 3.69% under standard light due to significant charge recombination with high R-s (9.42 Omega cm(2)). However, the PCE was remarkably improved by 2.3 times (8.33% PCE) under dim light, showing negligible decrease in open-circuit voltage and remarkable increase in fill factor, which is due to an exceptionally high R-sh of over 1000 k Omega cm(2). R-s is less significant under dim light because the generated current is too small to cause noticeable R-s-induced voltage losses. Instead, high R-sh becomes more important to avoid leakage currents. This work provides important tips to further optimize PSCs for indoor applications with low-power electronic devices such as Internet of things sensors.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Science > Department of Chemistry > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.