Manipulating the horizontal morphology and vertical distribution of the active layer in BHJ-PSC with a multi-functional solid organic additive

Please use this identifier to cite or link to this item: https://ir.lib.ncu.edu.tw/handle/987654321/101171

Title:	Manipulating the horizontal morphology and vertical distribution of the active layer in BHJ-PSC with a multi-functional solid organic additive
Authors:	吳春桂;Wu, Chun-Guey;Chiang, Chien-Hung;Han, Hsieh-Cheng
Contributors:	理學院化學學系
Keywords:	annealing;anodes;hydrogen bonding;mixing;moieties;polymers;solar cells;solar energy;spatial distribution;thermal stability
Date:	2014-04-21
Issue Date:	2026-04-21 14:26:00 (UTC+8)
Publisher:	Royal Society of Chemistry
Abstract:	摘要： A new type of simple organic solid additive, 2,3-pyridinediol, was added into the active layer of a Bulk Hetero-Junction Polymer Solar Cell (BHJ-PSC) to improve the processing and power conversion efficiency (PCE) of the device. The 2,3-pyridinediol additive, which has pyridyl and hydroxyl groups, can interact with both P3HT and PC 61 BM ( via π–π interactions or/and hydrogen-bonding), reorganizing the phase/domain and vertical distribution of the blended film. Therefore, even without thermal annealing, P3HT/PC 61 BM/2,3-pyridinediol film forms bicontinuous interpenetrated nano-domain networks with more P3HT close to the PEDOT:PSS anode. The 2,3-pyridinediol additive also can improve the efficiency of BHJ-PSCs based on other n-type materials such as ICBA (PCE of the device based on ICBA/P3HT increased from 3.35 to 5.93% after addition of the additive) and p-type materials such as PTB7 (PCE of the device using a PTB7/PC 71 BM active layer increased from 5.30 to 7.54% after addition of the additive). Moreover, the thermal stability of the PTB7/PC 71 BM/2,3-pyridinediol blended film is better than PTB7/PC 71 BM blended with 1,8-diiodooctane. When the active films were heated at 100 °C for 30 min, the PCE of PSC based on PTB7/PC 71 BM/1,8-diiodooctane decreased 20% (from 6.62% to 4.26%), whereas the PCE of PSC using a PTB7/PC 71 BM/2,3-pyridinediol blended film as an active layer decreased only ca. 3% (7.54% decreased to 7.30%). A small molecule solid additive in the active layer can mix well with the active components and will not be removed during the device fabrication processes. Therefore, the morphology of the active film can be well-controlled and PCEs of the corresponding devices are more reproducible. 出版日期： 2014-01-01 出處： Journal of materials chemistry. A, Materials for energy and sustainability, 2014-01, Vol.2 (15), p.5295-5303 資源來源： Royal Society of Chemistry 識別號： ISSN: 2050-7488 識別號： ISSN: 2050-7496 識別號： EISSN: 2050-7496 識別號： DOI: 10.1039/C3TA15378A
Appears in Collections:	[Department of Chemistry] journal & Dissertation

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