Consolidated Statements of Stockholders' Equity - USD ($)	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Total
Balance at Sep. 30, 2020	$ 1,271,831	$ 291,274,366	$ (289,719,906)	$ 2,826,291
Balance, beginning (in shares) at Sep. 30, 2020	127,183,109
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock in connection with exercise of warrants	$ 38,159	3,555,221		3,593,380
Issuance of common stock in connection with exercise of warrants (in shares)	3,815,935
Sale of common stock, net of issuance costs	$ 454,626	46,009,213		46,463,839
Sale of common stock, net of issuance costs (in shares)	45,462,584
Stock-based compensation expense		4,887,287		4,887,287
Net loss			(53,163,348)	(53,163,348)
Balance at Sep. 30, 2021	$ 1,764,616	345,726,087	(342,883,254)	4,607,449
Balance, ending (in shares) at Sep. 30, 2021	176,461,628
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock in connection with exercise of stock options	$ 250	17,500		17,750
Issuance of common stock in connection with exercise of stock options (in shares)	25,000
Issuance of common stock in connection with exercise of warrants	$ 157	187,943		188,100
Issuance of common stock in connection with exercise of warrants (in shares)	15,675
Sale of common stock, net of issuance costs	$ 508,082	61,756,650		62,264,732
Sale of common stock, net of issuance costs (in shares)	50,808,269
Stock-based compensation expense		7,710,804		7,710,804
Net loss			(66,052,264)	(66,052,264)
Balance at Sep. 30, 2022	$ 2,273,105	$ 415,398,984	$ (408,935,518)	$ 8,736,571
Balance, ending (in shares) at Sep. 30, 2022	227,310,572