首页|Unravel the Charge-Carrier Dynamics in Simple Dimethyl Oxalate-Treated Perovskite Solar Cells with Efficiency Exceeding 22％

Unravel the Charge-Carrier Dynamics in Simple Dimethyl Oxalate-Treated Perovskite Solar Cells with Efficiency Exceeding 22％

扫码查看
原文链接
  • NETL
  • NSTL
  • 万方数据
Understanding the effect of additive on the interfacial charge-carrier transfer dynamics is very crucial to obtaining highly efficient perovskite solar cells(PSCs).Herein,we designed a simple additive,dimethyl oxalate(DO),functioning as an effective defect passivator of perovskite grain boundaries via the coordination interaction between the carbonyl(C=O)and the exposed Pb2+.The modification with DO produces pinhole-free and compact perovskite films,enhancing the transportation capability of carriers.As a consequence,the DO-treated PSCs exhibited a power conversion efficiency(PCE)of 22.19％,which is significantly higher than that of the control device without additive(19.58％).More importantly,detailed transient absorption characterization reveals that the use of additive can decrease the hot-carrier cooling dynamics,improve the carrier transfer,and eliminate nonradiative recombination in PSCs.This present work provides a profound understanding the additives effect on the carrier dynamics in PSCs toward the Shockley-Queisser limit.

additive engineeringcarrier dynamicsdefect passivationPerovskite solar cell

Rongjun Zhao、Tai Wu、Rongshan Zhuang、Yong Hua、Yude Wang

展开 >

Yunnan Key Laboratory for Micro/Nano Materials & Technology,School of Materials and Energy,Yunnan University,Kunming 650504,China

Key Lab of Quantum Information of Yunnan Province,Yunnan University,Kunming 650504,China

国家自然科学基金云南省自然科学基金重点项目High-Level Talents Introduction in Yunnan ProvinceFund for Excellent Young Scholars of YunnanInternational Joint Research Center for Advanced Energy Materials of Yunnan ProvinceProgram for Excellent Young Talents of Yunnan UniversityMajor Science and Technology Project of Precious Metal Materials Genetic Engineering in Yunnan ProvinceMajor Science and Technology Project of Precious Metal Materials Genetic Engineering in Yunnan Province

22065038KC10110419C619300A010K264202006820202003AE1400012019ZE001-1202002AB080001-6

2023

10.1002/eem2.12417

能源与环境材料(英文)

能源与环境材料(英文)

CSCD
ISSN：
年,卷(期)：2023.6(5)
  • 56