daohang fenxiangbox searchbox qikanlogonew daohangnew searchboxnew navrightzone footerzone paper
中
Home > Journals > ACS Energy Letters
‹ Previous Article Next Article ›

Control of Crystal Structures and Optical Properties with Hybrid Formamidinium and 2-Hydroxyethylammonium Cations for Mesoscopic Carbon-Electrode Tin-Based Perovskite Solar Cells AITranslate

ChengMin Tsai; YuPei Lin; Murali Krishna Pola; Sudhakar Narra; Efat Jokar; YawWen Yang; Eric WeiGuang Diau;
National Chiao Tung University; National Chiao Tung University; National Chiao Tung University; National Chiao Tung University; National Chiao Tung University;National Synchrotron Radiation Research Center, Hsinchu 30076; National Chiao Tung University
AITranslate
Publisher: ACS
Share Citation Information Add to Favorites

    Scan to share on WeChat or Moments

Use WeChat scan.
Share with WeChat friends or Moments

Abstract AITranslate

Alcohol-based bifunctional ammonium cations, 2-hydroxyethylammonium (HEA+), HO(CH2)2NH3+, were introduced into formamidinium (FA+) tin-based perovskites (HEAxFA1–xSnI3; x = 0–1) to absorb light in carbon-based mesoscopic solar cells. We found that HEA+ cations play a key role to control the crystal structures, the lattice structures altered from orthorhombic (x = 0) to rhombohedral (x = 0.2–0.4) with greater symmetry. When x was increased to 0.6–1.0, tin and iodide vacancies were formed to generate 3D-vacant perovskites (HEAxFA1–xSn0.67I2.33, x ≥ 0.6) with a tetragonal structure. Tin-based perovskites in this series were fabricated into mesoporous solar cells using one-step drop-cast (DC), two-step solvent-extraction (SE), and SE + 3% ethylenediammonium diiodide (EDAI2) as an additive. After optimization of device performance with the SE + 3% EDAI2 approach, the HEA0.4FA0.6SnI3 (HEAI = 40%) device gave the best photovoltaic performance with JSC = 18.52 mA cm–2, VOC = 371 mV, FF = 0.562, and overall efficiency η = 3.9% after the device was stored for a period of 340 h.

KeyWords AITranslate

No data

Basic Information:

DOI：https://doi.org/10.1021/acsenergylett.8b01046

Chinese Library Classification Number:

Citation Information:

Alcohol-based bifunctional ammonium cations, 2-hydroxyethylammonium (HEA+), HO(CH2)2NH3+, were introduced into formamidinium (FA+) tin-based perovskites (HEAxFA1–xSnI3; x = 0–1) to absorb light in carbon-based mesoscopic solar cells. We found that HEA+ cations play a key role to control the crystal structures, the lattice structures altered from orthorhombic (x = 0) to rhombohedral (x = 0.2–0.4) with greater symmetry. When x was increased to 0.6–1.0, tin and iodide vacancies were formed to generate 3D-vacant perovskites (HEAxFA1–xSn0.67I2.33, x ≥ 0.6) with a tetragonal structure. Tin-based perovskites in this series were fabricated into mesoporous solar cells using one-step drop-cast (DC), two-step solvent-extraction (SE), and SE + 3% ethylenediammonium diiodide (EDAI2) as an additive. After optimization of device performance with the SE + 3% EDAI2 approach, the HEA0.4FA0.6SnI3 (HEAI = 40%) device gave the best photovoltaic performance with JSC = 18.52 mA cm–2, VOC = 371 mV, FF = 0.562, and overall efficiency η = 3.9% after the device was stored for a period of 340 h.

quote

GB/T 7714-2015 [1] ChengMin Tsai, YuPei Lin, Murali Krishna Pola, et al. ACS Energy Letters, 2018(3). DOI:10.1021/acsenergylett.8b01046.
MLA [1] ChengMin Tsai, et al., ACS Energy Letters, no. 3, 2018, https://doi.org/10.1021/acsenergylett.8b01046.
APA [1] ChengMin Tsai, YuPei Lin, Murali Krishna Pola, Sudhakar Narra, Efat Jokar, YawWen Yang, & Eric WeiGuang Diau. (2018). ACS Energy Letters(3). https://doi.org/10.1021/acsenergylett.8b01046
IEEE [1] ChengMin Tsai, YuPei Lin, Murali Krishna Pola, Sudhakar Narra, Efat Jokar, YawWen Yang, and Eric WeiGuang Diau, ACS Energy Letters, no. 3, 2018, doi: 10.1021/acsenergylett.8b01046.