Addition of 2D Ti3C2Tx to Enhance Photocurrent in Diodes for High‐Efficiency Organic Solar Cells. Issue 4 (9th March 2021)

• Record Type: Journal Article
• Authors: Zhao, Yong; Liu, Xiaojie; Jing, Xin; Wang, Xiangkun; Gao, Caiyun; Dai, Shuixing; Yu, Liangmin; Sun, Mingliang
• Is Part Of: Solar RRL. Volume 5:Issue 4(2021)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2021-03-09
• Subjects: 2D materials -- additives -- organic solar cells -- Ti3C2Tx; Solar energy -- Periodicals; Photovoltaic power generation -- Periodicals; Solar energy -- Research -- Periodicals; Photovoltaic power generation -- Research -- Periodicals; Periodicals; 333.7923
• DOI: 10.1002/solr.202100127
• Languages: English
• ISSNs: 2367-198X

Abstract

Abstract : Solution‐processed 2D Ti3 C2 T x nanosheets are incorporated into the active layer of organic solar cells (OSCs) as a third component to obtain an enhancement of the photovoltaic device performance. The power conversion efficiency (PCE) of the devices is boosted from 9.34% to 10.72% for the PBDB‐T:ITIC blend and from 14.64% to 16.25% for the PM6:Y6 blend after adding 2D Ti3 C2 T x nanosheets. The light scattering of the 2D flakes in Ti3 C2 T x nanosheets not only increases the short‐circuit current density ( J SC ) but also improves the carrier dissociation and transfer efficiency in devices, thus leading to reduced bimolecular recombination. Furthermore, Ti3 C2 T x with appropriate content has little effect on the interpenetrating network morphology and instead provides an additional pathway for charge transport in photoactive layers. Herein, a potential direction for the application of 2D Ti3 C2 T x materials in the field of OSCs is provided. Abstract : 2D Ti3 C2 T x nanosheets are fabricated and incorporated into the active layer of devices as a third component to obtain an enhancement of the photovoltaic device performance. The optimized devices based on PBDB‐T:ITIC@Ti3 C2 T x and PM6:Y6@Ti3 C2 T x reach a power conversion efficiency of 10.72% and 16.25%, respectively.