PbS colloidal quantum dots as an effective hole transporter for planar heterojunction perovskite solar cells. Issue 2 (2nd December 2014)

• Record Type: Journal Article
• Authors: Hu, Long; Wang, Weiwei; Liu, Huan; Peng, Jun; Cao, Hefeng; Shao, Gang; Xia, Zhe; Ma, Wanli; Tang, Jiang
• Is Part Of: Journal of materials chemistry. Volume 3:Issue 2(2015)
• Page Start: 515
• Page End: 518
• Publication Date: 2014-12-02
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c4ta04272g
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : Planar heterojunction perovskite solar cells were constructed with PbS colloidal quantum dots (CQDs) as an effective hole transporter and we tuned the energy level of PbS CQDs to optimize the device performance. Abstract : Here, we applied colloidal quantum dots (CQDs) as an effective p-type hole-transporting material (HTM) for planar heterojunction perovskite solar cells. By tuning the size of PbS CQDs, we engineered the energy alignment of the valence and conduction band of this new HTM with the perovskite light harvester and achieved conversion efficiencies up to 7.5%. Absorption of PbS CQDs also extends the absorption spectrum of perovskite solar cells into the infrared region.