Improved interfacial property by small molecule ethanediamine for high performance inverted planar perovskite solar cells
| Autor: | Anyu Zhang, Hao Chen, Tonggang Jiu, Siqi Chen, Guodong Zhang, Yunxin Zhang, Le Liu, Shuping Pang, Lianqing Yu, Jinhui Wang, Wenming Ding, Xin Guo |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Valence (chemistry) Open-circuit voltage business.industry Energy conversion efficiency Energy Engineering and Power Technology 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Thermal conduction 01 natural sciences Small molecule Polyelectrolyte 0104 chemical sciences Crystallinity Fuel Technology Planar Electrochemistry Optoelectronics 0210 nano-technology business Energy (miscellaneous) |
| Zdroj: | Journal of Energy Chemistry. 54:467-474 |
| ISSN: | 2095-4956 |
| DOI: | 10.1016/j.jechem.2020.06.029 |
| Popis: | We report a simple and effective method to realize desirable interfacial property for inverted planar perovskite solar cells (PSCs) by using small molecule ethanediamine for the construction of a novel polyelectrolyte hole transport material (P3CT-ED HTM). It is found that P3CT-ED can not only improve the hole transport property of P3CT-K but also improve the crystallinity of adjacent perovskite film. In addition, the introduction of ethanediamine into P3CT realigns the conduction and valence bands upwards, passivates surface defects and reduces nonradiative recombination. As a consequence, compared to P3CT-K hole transport layer (HTL) based devices, the average power conversion efficiency (PCE) is boosted from 17.2% to 19.6% for the counterparts with P3CT-ED, with simultaneous enhancement in open circuit voltage and fill factor. The resultant device displays a champion PCE of 20.5% with negligible hysteresis. |
| Databáze: | OpenAIRE |
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