期刊
ADVANCED ENERGY MATERIALS
卷 11, 期 18, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/aenm.202100292
关键词
interface; low dimensional; perovskite solar cells; printable solar cells
类别
资金
- National Natural Science Foundation of China [91733301, 22075094, 11904266, 21702069]
- Fundamental Research Funds for the Central Universities
- Science and Technology Department of Hubei Province [2017AAA190]
- 111 Project [B07038]
- Program for HUST Academic Frontier Youth Team [2016QYTD06]
- Open Project Program of Wuhan National Laboratory for Optoelectronics [2020WNLOKF014]
- Program Management Unit for Human Resources & Institutional Development, Research and Innovation [B05F630113]
The reduction of dimensionality in the perovskite absorber within mesoporous carbon electrodes via post-treatments enhances device performance. Printable hole-conductor-free perovskite solar cells using MAPbI(3) and FAPbI(3) achieve high efficiencies and open-circuit voltages, providing a new strategy for research in printable solar cells.
Printable hole-conductor-free perovskite solar cells (PSCs) have attracted intensive research attention due to their high stability and simple manufacturing process. However, the cells have suffered severe potential loss in the absence of the hole transporting layer. The dimensionality of the perovskite absorber in the mesoporous carbon electrodes by conducting post-treatments is reduced. The low-dimensional perovskites possess wide-bandgaps and form type-II band alignment, favoring directional charge transportation and thus enhancing the device performance. For the cells using MAPbI(3) (MA = methylammonium) as the light absorber, the open-circuit voltage (V-OC) is significantly enhanced from 0.92 to 0.98 V after posttreatment, delivering an overall efficiency of 16.24%. For the cells based on FAPbI(3) (FA = formamadinium), a high efficiency of 17.47% is achieved with V-OC of 1.02 V, which are both the highest reported values for printable hole-conductor-free PSCs. This strategy provides a facile method for tuning the energy level alignment for mesoscopic perovskite-based optoelectronics.
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