Hot‐Substrate Deposition of Hole‐ and Electron‐Transport Layers for Enhanced Performance in Perovskite Solar Cells
Abstract
Charge transport layers play an important role in determining the power conversion efficiencies (PCEs) of perovskite solar cells (PSCs). However, it has proven challenging to produce thin and compact charge transport layers via solution processing techniques. Herein, a hot substrate deposition method capable of improving the morphology of high‐coverage hole‐transport layers (HTLs) and electron‐transport layers (ETLs) is reported. PSC devices using HTLs deposited on a hot substrate show improvement in the open‐circuit voltage (Voc) from 1.041 to 1.070 V and the PCE from 17.00% to 18.01%. The overall device performance is then further enhanced with the hot substrate deposition of ETLs as the Voc and PCE reach 1.105 V and 19.16%, respectively. The improved performance can be explained by the decreased current leakage and series resistance, which are present in PSCs with rough and discontinuous HTLs and ETLs.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Sep 18, 2017
- Source ID
- 10.1002/aenm.201701659
Entities
People
- Bin Zhang
- Fan Zhang
- Fangfang Niu
- Jiarong Lian
- Jinsong Huang
- Junle Qu
- Linxing Zhang
- Pengju Zeng
- Peter Neil Rudd
- Sen Tian
- Zhenhua Yu
Organizations
- Air Force Office of Scientific Research
- National Natural Science Foundation of China
- University of Nebraska–Lincoln
- University of North Carolina at Chapel Hill