Deuteration-enhanced neutron contrasts to probe amorphous domain sizes in organic photovoltaic bulk heterojunction films
© 2024. The Author(s)..
An organic photovoltaic bulk heterojunction comprises of a mixture of donor and acceptor materials, forming a semi-crystalline thin film with both crystalline and amorphous domains. Domain sizes critically impact the device performance; however, conventional X-ray scattering techniques cannot detect the contrast between donor and acceptor materials within the amorphous intermixing regions. In this study, we employ neutron scattering and targeted deuteration of acceptor materials to enhance the scattering contrast by nearly one order of magnitude. Remarkably, the PM6:deuterated Y6 system reveals a new length scale, indicating short-range aggregation of Y6 molecules in the amorphous intermixing regions. All-atom molecular dynamics simulations confirm that this short-range aggregation is an inherent morphological advantage of Y6 which effectively assists charge extraction and suppresses charge recombination as shown by capacitance spectroscopy. Our findings uncover the amorphous nanomorphology of organic photovoltaic thin films, providing crucial insights into the morphology-driven device performance.
| Medienart: |
E-Artikel |
|---|
| Erscheinungsjahr: |
2024 |
|---|---|
| Erschienen: |
2024 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:15 |
|---|---|
| Enthalten in: |
Nature communications - 15(2024), 1 vom: 30. März, Seite 2784 |
| Sprache: |
Englisch |
|---|
| Beteiligte Personen: |
Cai, Guilong [VerfasserIn] |
|---|
| Links: |
|---|
| Themen: |
|---|
| Anmerkungen: |
Date Revised 02.04.2024 published: Electronic Citation Status PubMed-not-MEDLINE |
|---|
| doi: |
10.1038/s41467-024-47052-7 |
|---|
| funding: |
|
|---|---|
| Förderinstitution / Projekttitel: |
|
| PPN (Katalog-ID): |
NLM370448650 |
|---|
| LEADER | 01000caa a22002652 4500 | ||
|---|---|---|---|
| 001 | NLM370448650 | ||
| 003 | DE-627 | ||
| 005 | 20240403000737.0 | ||
| 007 | cr uuu---uuuuu | ||
| 008 | 240331s2024 xx |||||o 00| ||eng c | ||
| 024 | 7 | |a 10.1038/s41467-024-47052-7 |2 doi | |
| 028 | 5 | 2 | |a pubmed24n1361.xml |
| 035 | |a (DE-627)NLM370448650 | ||
| 035 | |a (NLM)38555349 | ||
| 040 | |a DE-627 |b ger |c DE-627 |e rakwb | ||
| 041 | |a eng | ||
| 100 | 1 | |a Cai, Guilong |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Deuteration-enhanced neutron contrasts to probe amorphous domain sizes in organic photovoltaic bulk heterojunction films |
| 264 | 1 | |c 2024 | |
| 336 | |a Text |b txt |2 rdacontent | ||
| 337 | |a ƒaComputermedien |b c |2 rdamedia | ||
| 338 | |a ƒa Online-Ressource |b cr |2 rdacarrier | ||
| 500 | |a Date Revised 02.04.2024 | ||
| 500 | |a published: Electronic | ||
| 500 | |a Citation Status PubMed-not-MEDLINE | ||
| 520 | |a © 2024. The Author(s). | ||
| 520 | |a An organic photovoltaic bulk heterojunction comprises of a mixture of donor and acceptor materials, forming a semi-crystalline thin film with both crystalline and amorphous domains. Domain sizes critically impact the device performance; however, conventional X-ray scattering techniques cannot detect the contrast between donor and acceptor materials within the amorphous intermixing regions. In this study, we employ neutron scattering and targeted deuteration of acceptor materials to enhance the scattering contrast by nearly one order of magnitude. Remarkably, the PM6:deuterated Y6 system reveals a new length scale, indicating short-range aggregation of Y6 molecules in the amorphous intermixing regions. All-atom molecular dynamics simulations confirm that this short-range aggregation is an inherent morphological advantage of Y6 which effectively assists charge extraction and suppresses charge recombination as shown by capacitance spectroscopy. Our findings uncover the amorphous nanomorphology of organic photovoltaic thin films, providing crucial insights into the morphology-driven device performance | ||
| 650 | 4 | |a Journal Article | |
| 700 | 1 | |a Li, Yuhao |e verfasserin |4 aut | |
| 700 | 1 | |a Fu, Yuang |e verfasserin |4 aut | |
| 700 | 1 | |a Yang, Hua |e verfasserin |4 aut | |
| 700 | 1 | |a Mei, Le |e verfasserin |4 aut | |
| 700 | 1 | |a Nie, Zhaoyang |e verfasserin |4 aut | |
| 700 | 1 | |a Li, Tengfei |e verfasserin |4 aut | |
| 700 | 1 | |a Liu, Heng |e verfasserin |4 aut | |
| 700 | 1 | |a Ke, Yubin |e verfasserin |4 aut | |
| 700 | 1 | |a Wang, Xun-Li |e verfasserin |4 aut | |
| 700 | 1 | |a Brédas, Jean-Luc |e verfasserin |4 aut | |
| 700 | 1 | |a Tang, Man-Chung |e verfasserin |4 aut | |
| 700 | 1 | |a Chen, Xiankai |e verfasserin |4 aut | |
| 700 | 1 | |a Zhan, Xiaowei |e verfasserin |4 aut | |
| 700 | 1 | |a Lu, Xinhui |e verfasserin |4 aut | |
| 773 | 0 | 8 | |i Enthalten in |t Nature communications |d 2010 |g 15(2024), 1 vom: 30. März, Seite 2784 |w (DE-627)NLM199274525 |x 2041-1723 |7 nnns |
| 773 | 1 | 8 | |g volume:15 |g year:2024 |g number:1 |g day:30 |g month:03 |g pages:2784 |
| 856 | 4 | 0 | |u http://dx.doi.org/10.1038/s41467-024-47052-7 |3 Volltext |
| 912 | |a GBV_USEFLAG_A | ||
| 912 | |a GBV_NLM | ||
| 951 | |a AR | ||
| 952 | |d 15 |j 2024 |e 1 |b 30 |c 03 |h 2784 | ||