journal article·2026-07-08

Surface Defect-Compensating Thiophene Ligands Reinforce Charge Transport in CsPbI 3 Quantum Dot Solar Cells

Miao Yan, Jian Ni, Shanjing Liu, Yuchen Miao, Yuhang Wang, Haoxuan Li, Xinyu Song, Guijun Li, Tiantian Li, Yingtang Zhou, Ying Zhang, Juan Li, Hongkun Cai, Jianjun Zhang

ACS Applied Materials & Interfaces· Volume 18· Issue 26
Publisher page

Abstract

PQD films with significantly reduced structural defects. The incorporation of 2-Thiophenacetamide (TPT) strengthens interdot electronic coupling, leading to PQD films with improved energetic homogeneity. Density functional theory calculations reveal that TPT exhibits stronger binding energy on PQD surfaces, favoring robust defect compensation and enhanced film stability. Compared with conventionally processed PQD solar cells, the TPT-treated devices demonstrate an increase in power conversion efficiency from 13.7% to 15.1%. This study provides mechanistic insights into the role of thiophene-based ligands in modulating PQD surface chemistry and establishes an effective molecular engineering strategy for achieving high-performance PQD photovoltaics.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Perovskite Materials and Applications · Quantum Dots Synthesis And Properties · Chemical and Physical Properties of Materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

College of Electronic Information and Optical Engineering, State Key Laboratory of Photovoltaic Materials and Cells, Tianjin Key Laboratory of Efficient Utilization of Solar Energy, Engineering Research Center of Thin Film Optoelectronics Technology, Ministry of Education

Nankai University

Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering

Shenzhen University

The Key Laboratory of Semiconductor Photovoltaic Technology at Universities of Inner Mongolia Autonomous Region, School of Physical Science and Technology

Inner Mongolia University

Marine Science and Technology College

Zhejiang Ocean University

Funding

National Natural Science Foundation of China · Tianjin Continuing Education Teaching Reform and Quality Improvement Research Program · Key Project of Tianjin Labor Education and Teaching Research Center · Ministry of Education Curriculum and Teaching Materials Research Project

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